I have not seen him — That is, I have no respect unto them. The sense is, who followed God and his command fully, and executed the judgment enjoined by God without any respect of persons, Exodus 32:26-27. They kept thy covenant — When the rest broke their covenant with God by that foul sin of idolatry with the calf, that tribe kept themselves pure from that infection, and adhered to God and his worship.
Related Commentaries of Deuteronomy 33:9
Deuteronomy 33:9
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.