Biblical Marriage & Relationship Verses

This is the law of jealousies, when a wife goeth aside to another instead of her husband, and is defiled; Or when the spirit of jealousy cometh upon him, and he be jealous over his wife, and shall set the woman before the LORD, and the priest shall execute upon her all this law.
-Numbers 5:29-30

And he shall take a wife in her virginity. A widow, or a divorced woman, or profane, or an harlot, these shall he not take: but he shall take a virgin of his own people to wife.
-Leviticus 21:13-14

They shall not take a wife that is a whore, or profane; neither shall they take a woman put away from her husband: for he is holy unto his God.
-Leviticus 21:7

And the man that committeth adultery with another man's wife, even he that committeth adultery with his neighbour's wife, the adulterer and the adulteress shall surely be put to death... If a man also lie with mankind, as he lieth with a woman, both of them have committed an abomination: they shall surely be put to death; their blood [shall be] upon them.
-Leviticus 20:10, 13

The nakedness of thy father's wife shalt thou not uncover: it is thy father's nakedness...Moreover thou shalt not lie carnally with thy neighbour's wife, to defile thyself with her.
-Leviticus 18:8, 20

Thou shalt not covet thy neighbour's house, thou shalt not covet thy neighbour's wife.
-Exodus 20:17

Thou shalt not commit adultery.
-Exodus 20:14

And Onan knew that the seed should not be his; and it came to pass, when he went in unto his brother's wife, that he spilled it on the ground, lest that he should give seed to his brother. And the thing which he did displeased the LORD: wherefore he slew him also.
-Genesis 38:9-10

And he said, I will certainly return unto thee according to the time of life; and, lo, Sarah thy wife shall have a son. And Sarah heard it in the tent door, which was behind him. Now Abraham and Sarah were old and well stricken in age; and it ceased to be with Sarah after the manner of women. Therefore Sarah laughed within herself, saying, After I am waxed old shall I have pleasure, my lord being old also?
-Genesis 18:10-12

Now Sarai Abram's wife bare him no children: and she had an handmaid, an Egyptian, whose name was Hagar. And Sarai said unto Abram, Behold now, the LORD hath restrained me from bearing: I pray thee, go in unto my maid; it may be that I may obtain children by her. And Abram hearkened to the voice of Sarai. And Sarai Abram's wife took Hagar her maid the Egyptian, after Abram had dwelt ten years in the land of Canaan, and gave her to her husband Abram to be his wife.
-Genesis 16:1-3