Summing up Malachi:

    An oracle: The word of the Lord to Israel through Malachi.
    [2] "I have loved you," says the Lord.
    "But you ask, 'How have you loved us?'
    "Was not Esau Jacob's brother?" the Lord says. "Yet I have loved Jacob, [3] but Esau I have hated, and I have turned his mountains into a wasteland and left his inheritance to the desert jackals."
    [4] Edom may say, "Though we have been crushed, we will rebuild the ruins."
    But this is what the Lord Almighty says: "They may build, but I will demolish. They will be called the Wicked Land, a people always under the wrath of the Lord. [5] You will see it with your own eyes and say, 'Great is the Lord--even beyond the borders of Israel!'
    [6] "A son honors his father, and a servant his master. If I am a father, where is the honor due me? If I am a master, where is the respect due me?" says the Lord Almighty. "It is you, O priests, who show contempt for my name.
    "But you ask, 'How have we shown contempt for your name?'
    [7] "You place defiled food on my altar.
    "But you ask, 'How have we defiled you?'
    "By saying that the Lord's table is contemptible. [8] When you bring blind animals for sacrifice, is that not wrong? When you sacrifice crippled or diseased animals, is that not wrong? Try offering them to your governor! Would he be pleased with you? Would he accept you?" says the Lord Almighty.
    [9] "Now implore God to be gracious to us. With such offerings from your hands, will he accept you?"--says the Lord Almighty.
    [10] "Oh, that one of you would shut the temple doors, so that you would not light useless fires on my altar! I am not pleased with you," says the Lord Almighty, "and I will accept no offering from your hands. [11] My name will be great among the nations, from the rising to the setting of the sun. In every place incense and pure offerings will be brought to my name, because my name will be great among the nations," says the Lord Almighty.
    [12] "But you profane it by saying of the Lord's table, 'It is defiled,' and of its food, 'It is contemptible.' [13] And you say, 'What a burden!' and you sniff at it contemptuously," says the Lord Almighty.
    "When you bring injured, crippled or diseased animals and offer them as sacrifices, should I accept them from your hands?" says the Lord. [14] "Cursed is the cheat who has an acceptable male in his flock and vows to give it, but then sacrifices a blemished animal to the Lord. For I am a great king," says the Lord Almighty, "and my name is to be feared among the nations.
    [2:1] "And now this admonition is for you, O priests. [2] If you do not listen, and if you do not set your heart to honor my name," says the Lord Almighty, "I will send a curse upon you, and I will curse your blessings. Yes, I have already cursed them, because you have not set your heart to honor me.
    [3] "Because of you I will rebuke your descendants; I will spread on your faces the offal from your festival sacrifices, and you will be carried off with it. [4] And you will know that I have sent you this admonition so that my covenant with Levi may continue," says the Lord Almighty. [5] "My covenant was with him, a covenant of life and peace, and I gave them to him; this called for reverence and he revered me and stood in awe of my name. [6] True instruction was in his mouth and nothing false was found on his lips. He walked with me in peace and uprightness, and turned many from sin.
    [7] "For the lips of a priest ought to preserve knowledge, and from his mouth men should seek instruction--because he is the messenger of the Lord Almighty. [8] But you have turned from the way and by your teaching have caused many to stumble; you have violated the covenant with Levi," says the Lord Almighty. [9] "So I have caused you to be despised and humiliated before all the people, because you have not followed my ways but have shown partiality in matters of the law."
    [10] Have we not all one Father? Did not one God create us? Why do we profane the covenant of our fathers by breaking faith with one another?
    [11] Judah has broken faith. A detestable thing has been committed in Israel and in Jerusalem: Judah has desecrated the sanctuary the Lord loves, by marrying the daughter of a foreign god. [12] As for the man who does this, whoever he may be, may the Lord cut him off from the tents of Jacob--even though he brings offerings to the Lord Almighty.
    [13] Another thing you do: You flood the Lord's altar with tears. You weep and wail because he no longer pays attention to your offerings or accepts them with pleasure from your hands. [14] You ask, "Why?" It is because the Lord is acting as the witness between you and the wife of your youth, because you have broken faith with her, though she is your partner, the wife of your marriage covenant.
    [15] Has not the Lord made them one? In flesh and spirit they are his. And why one? Because he was seeking godly offspring. So guard yourself in your spirit, and do not break faith with the wife of your youth.
    [16] "I hate divorce," says the Lord God of Israel, "and I hate a man's covering himself with violence as well as with his garment," says the Lord Almighty.
    So guard yourself in your spirit, and do not break faith.
    [17] You have wearied the Lord with your words.
    "How have we wearied him?" you ask.
    By saying, "All who do evil are good in the eyes of the Lord, and he is pleased with them" or "Where is the God of justice?"
    [3:1] "See, I will send my messenger, who will prepare the way before me. Then suddenly the Lord you are seeking will come to his temple; the messenger of the covenant, whom you desire, will come," says the Lord Almighty.
    [2] But who can endure the day of his coming? Who can stand when he appears? For he will be like a refiner's fire or a launderer's soap. [3] He will sit as a refiner and purifier of silver; he will purify the Levites and refine them like gold and silver. Then the Lord will have men who will bring offerings in righteousness, [4] and the offerings of Judah and Jerusalem will be acceptable to the Lord, as in days gone by, as in former years.
    [5] "So I will come near to you for judgment. I will be quick to testify against sorcerers, adulterers and perjurers, against those who defraud laborers of their wages, who oppress the widows and the fatherless, and deprive aliens of justice, but do not fear me," says the Lord Almighty.
    [6] "I the Lord do not change. So you, O descendants of Jacob, are not destroyed. [7] Ever since the time of your forefathers you have turned away from my decrees and have not kept them. Return to me, and I will return to you," says the Lord Almighty.
    "But you ask, 'How are we to return?'
    [8] "Will a man rob God? Yet you rob me.
    "But you ask, 'How do we rob you?'
    "In tithes and offerings. [9] You are under a curse--the whole nation of you--because you are robbing me. [10] Bring the whole tithe into the storehouse, that there may be food in my house. Test me in this," says the Lord Almighty, "and see if I will not throw open the floodgates of heaven and pour out so much blessing that you will not have room enough for it. [11] I will prevent pests from devouring your crops, and the vines in your fields will not cast their fruit," says the Lord Almighty. [12] "Then all the nations will call you blessed, for yours will be a delightful land," says the Lord Almighty.
    [13] "You have said harsh things against me," says the Lord.
    "Yet you ask, 'What have we said against you?'
    [14] "You have said, 'It is futile to serve God. What did we gain by carrying out his requirements and going about like mourners before the Lord Almighty? [15] But now we call the arrogant blessed. Certainly the evildoers prosper, and even those who challenge God escape.' "
    [16] Then those who feared the Lord talked with each other, and the Lord listened and heard. A scroll of remembrance was written in his presence concerning those who feared the Lord and honored his name.
    [17] "They will be mine," says the Lord Almighty, "in the day when I make up my treasured possession. I will spare them, just as in compassion a man spares his son who serves him. [18] And you will again see the distinction between the righteous and the wicked, between those who serve God and those who do not.
    [4:1] "Surely the day is coming; it will burn like a furnace. All the arrogant and every evildoer will be stubble, and that day that is coming will set them on fire," says the Lord Almighty. "Not a root or a branch will be left to them. [2] But for you who revere my name, the sun of righteousness will rise with healing in its wings. And you will go out and leap like calves released from the stall. [3] Then you will trample down the wicked; they will be ashes under the soles of your feet on the day when I do these things," says the Lord Almighty.
    [4] "Remember the law of my servant Moses, the decrees and laws I gave him at Horeb for all Israel.
    [5] "See, I will send you the prophet Elijah before that great and dreadful day of the Lord comes. [6] He will turn the hearts of the fathers to their children, and the hearts of the children to their fathers; or else I will come and strike the land with a curse."  _[NIV]

Back to the basics of marriage:

    Another thing you do: You flood the Lord's altar with tears. You weep and wail because he no longer pays attention to your offerings or accepts them with pleasure from your hands. [14] You ask, "Why?" It is because the Lord is acting as the witness between you and the wife of your youth, because you have broken faith with her, though she is your partner, the wife of your marriage covenant.
    [15] Has not the Lord made them one? In flesh and spirit they are his. And why one? Because he was seeking godly offspring. So guard yourself in your spirit, and do not break faith with the wife of your youth.
    [16] "I hate divorce," says the Lord God of Israel, "and I hate a man's covering himself with violence as well as with his garment," says the Lord Almighty.
    So guard yourself in your spirit, and do not break faith. _[NIV]

    Now for the matters you wrote about: It is good for a man not to marry. [2] But since there is so much immorality, each man should have his own wife, and each woman her own husband. [3] The husband should fulfill his marital duty to his wife, and likewise the wife to her husband. [4] The wife's body does not belong to her alone but also to her husband. In the same way, the husband's body does not belong to him alone but also to his wife. [5] Do not deprive each other except by mutual consent and for a time, so that you may devote yourselves to prayer. Then come together again so that Satan will not tempt you because of your lack of self-control. [6] I say this as a concession, not as a command. [7] I wish that all men were as I am. But each man has his own gift from God; one has this gift, another has that.
    [8] Now to the unmarried and the widows I say: It is good for them to stay unmarried, as I am. [9] But if they cannot control themselves, they should marry, for it is better to marry than to burn with passion.
    [10] To the married I give this command (not I, but the Lord): A wife must not separate from her husband. [11] But if she does, she must remain unmarried or else be reconciled to her husband. And a husband must not divorce his wife.
    [12] To the rest I say this (I, not the Lord): If any brother has a wife who is not a believer and she is willing to live with him, he must not divorce her. [13] And if a woman has a husband who is not a believer and he is willing to live with her, she must not divorce him. [14] For the unbelieving husband has been sanctified through his wife, and the unbelieving wife has been sanctified through her believing husband. Otherwise your children would be unclean, but as it is, they are holy.
    [15] But if the unbeliever leaves, let him do so. A believing man or woman is not bound in such circumstances; God has called us to live in peace. [16] How do you know, wife, whether you will save your husband? Or, how do you know, husband, whether you will save your wife?
    [17] Nevertheless, each one should retain the place in life that the Lord assigned to him and to which God has called him. This is the rule I lay down in all the churches. [18] Was a man already circumcised when he was called? He should not become uncircumcised. Was a man uncircumcised when he was called? He should not be circumcised. [19] Circumcision is nothing and uncircumcision is nothing. Keeping God's commands is what counts. [20] Each one should remain in the situation which he was in when God called him. [21] Were you a slave when you were called? Don't let it trouble you--although if you can gain your freedom, do so. [22] For he who was a slave when he was called by the Lord is the Lord's freedman; similarly, he who was a free man when he was called is Christ's slave. [23] You were bought at a price; do not become slaves of men. [24] Brothers, each man, as responsible to God, should remain in the situation God called him to.
    [25] Now about virgins: I have no command from the Lord, but I give a judgment as one who by the Lord's mercy is trustworthy. [26] Because of the present crisis, I think that it is good for you to remain as you are. [27] Are you married? Do not seek a divorce. Are you unmarried? Do not look for a wife. [28] But if you do marry, you have not sinned; and if a virgin marries, she has not sinned. But those who marry will face many troubles in this life, and I want to spare you this.
    [29] What I mean, brothers, is that the time is short. From now on those who have wives should live as if they had none; [30] those who mourn, as if they did not; those who are happy, as if they were not; those who buy something, as if it were not theirs to keep; [31] those who use the things of the world, as if not engrossed in them. For this world in its present form is passing away.
    [32] I would like you to be free from concern. An unmarried man is concerned about the Lord's affairs--how he can please the Lord. [33] But a married man is concerned about the affairs of this world--how he can please his wife-- [34] and his interests are divided. An unmarried woman or virgin is concerned about the Lord's affairs: Her aim is to be devoted to the Lord in both body and spirit. But a married woman is concerned about the affairs of this world--how she can please her husband. [35] I am saying this for your own good, not to restrict you, but that you may live in a right way in undivided devotion to the Lord.
    [36] If anyone thinks he is acting improperly toward the virgin he is engaged to, and if she is getting along in years and he feels he ought to marry, he should do as he wants. He is not sinning. They should get married. [37] But the man who has settled the matter in his own mind, who is under no compulsion but has control over his own will, and who has made up his mind not to marry the virgin--this man also does the right thing. [38] So then, he who marries the virgin does right, but he who does not marry her does even better.
    [39] A woman is bound to her husband as long as he lives. But if her husband dies, she is free to marry anyone she wishes, but he must belong to the Lord. [40] In my judgment, she is happier if she stays as she is--and I think that I too have the Spirit of God. _[NIV]

    Love is patient, love is kind. It does not envy, it does not boast, it is not proud. [5] It is not rude, it is not self-seeking, it is not easily angered, it keeps no record of wrongs. [6] Love does not delight in evil but rejoices with the truth. [7] It always protects, always trusts, always hopes, always perseveres.
    [8] Love never fails. But where there are prophecies, they will cease; where there are tongues, they will be stilled; where there is knowledge, it will pass away. _[NIV]

    Be imitators of God, therefore, as dearly loved children [2] and live a life of love, just as Christ loved us and gave himself up for us as a fragrant offering and sacrifice to God.
    [3] But among you there must not be even a hint of sexual immorality, or of any kind of impurity, or of greed, because these are improper for God's holy people. [4] Nor should there be obscenity, foolish talk or coarse joking, which are out of place, but rather thanksgiving. [5] For of this you can be sure: No immoral, impure or greedy person--such a man is an idolater--has any inheritance in the kingdom of Christ and of God. [6] Let no one deceive you with empty words, for because of such things God's wrath comes on those who are disobedient. [7] Therefore do not be partners with them.
    [8] For you were once darkness, but now you are light in the Lord. Live as children of light [9] (for the fruit of the light consists in all goodness, righteousness and truth) [10] and find out what pleases the Lord. [11] Have nothing to do with the fruitless deeds of darkness, but rather expose them. [12] For it is shameful even to mention what the disobedient do in secret. [13] But everything exposed by the light becomes visible, [14] for it is light that makes everything visible. This is why it is said:

    "Wake up, O sleeper,
        rise from the dead,
    and Christ will shine on you."
 
    [15] Be very careful, then, how you live--not as unwise but as wise, [16] making the most of every opportunity, because the days are evil. [17] Therefore do not be foolish, but understand what the Lord's will is. [18] Do not get drunk on wine, which leads to debauchery. Instead, be filled with the Spirit. [19] Speak to one another with psalms, hymns and spiritual songs. Sing and make music in your heart to the Lord, [20] always giving thanks to God the Father for everything, in the name of our Lord Jesus Christ.
    [21] Submit to one another out of reverence for Christ.
    [22] Wives, submit to your husbands as to the Lord. [23] For the husband is the head of the wife as Christ is the head of the church, his body, of which he is the Savior. [24] Now as the church submits to Christ, so also wives should submit to their husbands in everything.
    [25] Husbands, love your wives, just as Christ loved the church and gave himself up for her [26] to make her holy, cleansing her by the washing with water through the word, [27] and to present her to himself as a radiant church, without stain or wrinkle or any other blemish, but holy and blameless. [28] In this same way, husbands ought to love their wives as their own bodies. He who loves his wife loves himself. [29] After all, no one ever hated his own body, but he feeds and cares for it, just as Christ does the church-- [30] for we are members of his body. [31] "For this reason a man will leave his father and mother and be united to his wife, and the two will become one flesh." [32] This is a profound mystery--but I am talking about Christ and the church. [33] However, each one of you also must love his wife as he loves himself, and the wife must respect her husband. _[NIV]