Since there are frequent questions about these topics, viewers should know what the Bible says, rather than the opinions of others.
1. Marriage is between a man and a woman
And the LORD God caused a deep sleep to fall upon Adam, and he slept: and he took one of his ribs, and closed up the flesh instead thereof; And the rib, which the LORD God had taken from man, made he a woman, and brought her unto the man. And Adam said, This is now bone of my bones, and flesh of my flesh: she shall be called Woman, because she was taken out of Man. Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh. (Gen 2:21-24)
And he answered and said unto them, Have ye not read, that he which made them at the beginning made them male and female, And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh? Wherefore they are no more twain, but one flesh. What therefore God hath joined together, let not man put asunder. (Mt 19:4-6)
2. Marriage is until the death of a spouse
The wife is bound by the law as long as her husband liveth; but if her husband be dead, she is at liberty to be married to whom she will; only in the Lord. (1 Cor 7:39)
For the woman which hath an husband is bound by the law to her husband so long as he liveth; but if the husband be dead, she is loosed from the law of her husband. So then if, while her husband liveth, she be married to another man, she shall be called an adulteress: but if her husband be dead, she is free from that law; so that she is no adulteress, though she be married to another man. (Rom 7:2,3)
3. Marriage is honorable in all and the norm for all
Marriage is honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge. (Heb 13:4)
Whoso findeth a wife findeth a good thing, and obtaineth favour of the LORD. (Prov 18:22)
Now concerning the things whereof ye wrote unto me: It is good for a man not to touch a woman. Nevertheless, to avoid fornication, let every man have his own wife, and let every woman have her own husband. (1 Cor 7:1,2)
I will therefore that the younger women marry, bear children, guide the house, give none occasion to the adversary to speak reproachfully. (1 Tim 5:14)
4. The single state is the exception, and forbidding to marry is demonic
His disciples say unto him, If the case of the man be so with his wife, it is not good to marry. But he said unto them, All men cannot receive this saying, save they to whom it is given. For there are some eunuchs, which were so born from their mother's womb: and there are some eunuchs, which were made eunuchs of men: and there be eunuchs, which have made themselves eunuchs for the kingdom of heaven's sake. He that is able to receive it, let him receive it. (Mt 19:10-12)
Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils; Speaking lies in hypocrisy; having their conscience seared with a hot iron; Forbidding to marry, and commanding to abstain from meats, which God hath created to be received with thanksgiving of them which believe and know the truth. (1 Tim 4:1-3)
5. Christians are to marry Christians, not unbelievers
Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? And what concord hath Christ with Belial? or what part hath he that believeth with an infidel? And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people. (2 Cor 6:14-16)
6. God hates divorce
For the LORD, the God of Israel, saith that he hateth putting away: for [one] covereth violence with his garment, saith the LORD of hosts: therefore take heed to your spirit, that ye deal not treacherously. (Mal 2:16)
And unto the married I command, yet not I, but the Lord, Let not the wife depart from her husband: But and if she depart, let her remain unmarried, or be reconciled to her husband: and let not the husband put away his wife. (1 Cor 7:10,11)
7. God allows divorce for one reason only
When a man hath taken a wife, and married her, and it come to pass that she find no favour in his eyes, because he hath found some uncleanness in her: then let him write her a bill of divorcement, and give [it] in her hand, and send her out of his house. (Deut 24:1)
And I say unto you, Whosoever shall put away his wife, except [it be] for fornication, and shall marry another, committeth adultery: and whoso marrieth her which is put away doth commit adultery. (Mt 19:9)
7. God allows the separation of unbelieving spouses from believers
But if the unbelieving depart, let him depart. A brother or a sister is not under bondage in such [cases]: but God hath called us to peace. (1 Cor 7:15)
1. Marriage is between a man and a woman
And the LORD God caused a deep sleep to fall upon Adam, and he slept: and he took one of his ribs, and closed up the flesh instead thereof; And the rib, which the LORD God had taken from man, made he a woman, and brought her unto the man. And Adam said, This is now bone of my bones, and flesh of my flesh: she shall be called Woman, because she was taken out of Man. Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh. (Gen 2:21-24)
And he answered and said unto them, Have ye not read, that he which made them at the beginning made them male and female, And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh? Wherefore they are no more twain, but one flesh. What therefore God hath joined together, let not man put asunder. (Mt 19:4-6)
2. Marriage is until the death of a spouse
The wife is bound by the law as long as her husband liveth; but if her husband be dead, she is at liberty to be married to whom she will; only in the Lord. (1 Cor 7:39)
For the woman which hath an husband is bound by the law to her husband so long as he liveth; but if the husband be dead, she is loosed from the law of her husband. So then if, while her husband liveth, she be married to another man, she shall be called an adulteress: but if her husband be dead, she is free from that law; so that she is no adulteress, though she be married to another man. (Rom 7:2,3)
3. Marriage is honorable in all and the norm for all
Marriage is honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge. (Heb 13:4)
Whoso findeth a wife findeth a good thing, and obtaineth favour of the LORD. (Prov 18:22)
Now concerning the things whereof ye wrote unto me: It is good for a man not to touch a woman. Nevertheless, to avoid fornication, let every man have his own wife, and let every woman have her own husband. (1 Cor 7:1,2)
I will therefore that the younger women marry, bear children, guide the house, give none occasion to the adversary to speak reproachfully. (1 Tim 5:14)
4. The single state is the exception, and forbidding to marry is demonic
His disciples say unto him, If the case of the man be so with his wife, it is not good to marry. But he said unto them, All men cannot receive this saying, save they to whom it is given. For there are some eunuchs, which were so born from their mother's womb: and there are some eunuchs, which were made eunuchs of men: and there be eunuchs, which have made themselves eunuchs for the kingdom of heaven's sake. He that is able to receive it, let him receive it. (Mt 19:10-12)
Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils; Speaking lies in hypocrisy; having their conscience seared with a hot iron; Forbidding to marry, and commanding to abstain from meats, which God hath created to be received with thanksgiving of them which believe and know the truth. (1 Tim 4:1-3)
5. Christians are to marry Christians, not unbelievers
Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? And what concord hath Christ with Belial? or what part hath he that believeth with an infidel? And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people. (2 Cor 6:14-16)
6. God hates divorce
For the LORD, the God of Israel, saith that he hateth putting away: for [one] covereth violence with his garment, saith the LORD of hosts: therefore take heed to your spirit, that ye deal not treacherously. (Mal 2:16)
And unto the married I command, yet not I, but the Lord, Let not the wife depart from her husband: But and if she depart, let her remain unmarried, or be reconciled to her husband: and let not the husband put away his wife. (1 Cor 7:10,11)
7. God allows divorce for one reason only
When a man hath taken a wife, and married her, and it come to pass that she find no favour in his eyes, because he hath found some uncleanness in her: then let him write her a bill of divorcement, and give [it] in her hand, and send her out of his house. (Deut 24:1)
And I say unto you, Whosoever shall put away his wife, except [it be] for fornication, and shall marry another, committeth adultery: and whoso marrieth her which is put away doth commit adultery. (Mt 19:9)
7. God allows the separation of unbelieving spouses from believers
But if the unbelieving depart, let him depart. A brother or a sister is not under bondage in such [cases]: but God hath called us to peace. (1 Cor 7:15)