Deuteronomy 33:8-10

CLV(i) 8 About Levi he said:May your Thummim and your Urim be for your benign man whom you probed at Massah; you contended with him at the waters of Meribah, 9 the one saying of his father and of his mother:I do not see them, and he neither recognized his brothers, nor did he know his sons. For they observed Your sayings and preserved Your covenant. 10 They shall direct Your judgments for Jacob, and Your law for Israel. They shall bring incense to Your nostrils and a holocaust on Your altar.