Deuteronomy 33:9

He said of his father and mother, ‘I do not consider them.’ He disregarded his brothers and did not know his own sons, for he kept Your word and maintained Your covenant.

Note Hebrew they kept, most likely referring to Levi in the plural; similarly twice in verse 10

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.

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.

Who said of his father, and of his mother, I have not seen him; Neither did he acknowledge his brethren, Nor knew he his own children: For they have observed thy word, And keep thy covenant.