KJV Exodus 21:7–11 regulates plural marriage.
Exodus 21:7–11, Old Testament, The Church of Jesus Christ of Latter Day Saints, accessed April 27, 2023
7 And if a man sell his daughter to be a maidservant, she shall not go out as the menservants do.
8 If she please not her master, who hath betrothed her to himself, then shall he let her be redeemed: to sell her unto a strange nation he shall have no power, seeing he hath dealt deceitfully with her.
9 And if he have betrothed her unto his son, he shall deal with her after the manner of daughters.
10 If he take him another wife; her food, her raiment, and her duty of marriage, shall he not diminish.
11 And if he do not these three unto her, then shall she go out free without money.