Genesis 2:24
Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.
Two of the eight were not written about marriage at all — Ecclesiastes 4 speaks of any two people, 1 Corinthians 13 to a quarrelling church — and they carry the list. Only Hebrews 13:4 sounds a warning.
8 passages
Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.
Whoso findeth a wife findeth a good thing, and obtaineth favour of the LORD.
Two are better than one; because they have a good reward for their labour.
For if they fall, the one will lift up his fellow: but woe to him that is alone when he falleth; for he hath not another to help him up.
Again, if two lie together, then they have heat: but how can one be warm alone?
And if one prevail against him, two shall withstand him; and a threefold cord is not quickly broken.
Charity suffereth long, and is kind; charity envieth not; charity vaunteth not itself, is not puffed up,
Doth not behave itself unseemly, seeketh not her own, is not easily provoked, thinketh no evil;
Rejoiceth not in iniquity, but rejoiceth in the truth;
Beareth all things, believeth all things, hopeth all things, endureth all things.
Husbands, love your wives, even as Christ also loved the church, and gave himself for it;
Nevertheless let every one of you in particular so love his wife even as himself; and the wife see that she reverence her husband.
And above all these things put on charity, which is the bond of perfectness.
Marriage is honourable in all, and the bed undefiled: but whoremongers and adulterers God will judge.
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One that belongs here for you — something a friend sent, or that you keep coming back to when you pray about marriage.