Deuteronomy 33:9-11

Levi said that he didn't pay attention to his father and mother, that he didn't acknowledge his brothers, and that he didn't recognize his children. The Levites did what you said and kept your agreement. They will teach your regulations to Jacob and your law to Israel. They will place incense before you, and sacrifice whole burnt offerings on your altar. Lord, please bless what they have, and accept their service for you. Destroy those who attack them; make sure their enemies never rise again.”