Leviticus 19:17-19 New Revised Standard Version (NRSV)
17 You shall not hate in your heart anyone of your kin; you shall reprove your neighbor, or you will incur guilt yourself. 18 You shall not take vengeance or bear a grudge against any of your people, but you shall love your neighbor as yourself: I am the Lord.
19 You shall keep my statutes. You shall not let your animals breed with a different kind; you shall not sow your field with two kinds of seed; nor shall you put on a garment made of two different materials.