Deuteronomy 33:8-10

8About Levi he said: “Your Thummim and Urim belong to your faithful servant. You tested him at Massah; you contended with him at the waters of Meribah.

9He said of his father and mother, ‘I have no regard for them.’ He did not recognize his brothers or acknowledge his own children, but he watched over your word and guarded your covenant.

10He teaches your precepts to Jacob and your law to Israel. He offers incense before you and whole burnt offerings on your altar.