Leviticus is the shits.
19'You are to keep My statutes. You shall not breed together two kinds of your cattle; you shall not sow your field with two kinds of seed, nor wear a garment upon you of two kinds of material mixed together. 20Now if a man lies carnally with a woman who is a slave acquired for another man, but who has in no way been redeemed nor given her freedom, there shall be punishment; they shall not, however, be put to death, because she was not free
But my favorite Old Testament's verse is by far Deuteronomy 22:28
28 If a man happens to meet a virgin who is not pledged to be married and rapes her and they are discovered, 29 he shall pay her father fifty shekels[a] of silver. He must marry the young woman, for he has violated her. He can never divorce her as long as he lives.