Leviticus 19:13

19:13 You must not oppress your neighbor or commit robbery against him. You must not withhold the wages of the hired laborer overnight until morning.

Leviticus 19:18

19:18 You must not take vengeance or bear a grudge against the children of your people, but you must love your neighbor as yourself. I am the Lord.

Leviticus 20:10

20:10 If a man commits adultery with his neighbor’s wife, both the adulterer and the adulteress must be put to death.