Deuteronomy 33:9 in the World English Bible
He said of his father, and of his mother, ‘I have not seen him.’ He didn’t acknowledge his brothers, nor did he know his own children; for they have observed your word, and keep your covenant.
Context
8 And of Levi he said, Let thy Thummim and thy Urim be with thy holy one, whom thou didst prove at Massah, and with whom thou didst strive at the waters of Meribah;
9 Who said unto his father and to his mother, I have not seen him; neither did he acknowledge his brethren, nor knew his own children: for they have observed thy word, and kept thy covenant.
10 They shall teach Jacob thy judgments, and Israel thy law: they shall put incense before thee, and whole burnt sacrifice upon thine altar.