Leviticus 19:1-2, 15-18

19The Lord spoke to Moses, saying:

Speak to all the congregation of the people of Israel and say to them: You shall be holy, for I the Lord your God am holy.

15 You shall not render an unjust judgement; you shall not be partial to the poor or defer to the great: with justice you shall judge your neighbour. 16You shall not go around as a slanderer among your people, and you shall not profit by the blood of your neighbour: I am the Lord.

17 You shall not hate in your heart anyone of your kin; you shall reprove your neighbour, or you will incur guilt yourself. 18You shall not take vengeance or bear a grudge against any of your people, but you shall love your neighbour as yourself: I am the Lord.