Devarim 33:7-9

Orthodox Jewish Bible

⁷ And this to Yehudah: and he said, Shema, Hashem, the voice of Yehudah, and bring him unto his people; let his hands contend for him; and be Thou an ezer (help) to him from his enemies.

⁸ And of Levi he said, Let Thy Tummim and Thy Urim be with Thy chasid, whom Thou didst prove at Massah, and with whom Thou didst strive at the waters of Merivah;

⁹ Who said unto his av and to his em, I have not seen him; neither did he acknowledge his brethren, nor knew his own banim; for they [Levi’im] have been shomer over Thy word, and Thy Brit they have preserved.