"Disciples of Moses"

And they reviled him, saying, "You are His disciple, but we are disciples of Moses. (John 9:28 ESV)

they = the Jewish religious leaders (those who should have taken leadership in making disciples of the Messiah)

reviled: the idea of being Jesus' disciples should have filled the religious leaders with praise; instead, it filled them with bitterness and anger

him = the blind man who had been healed and who had only sought to give an honest testimony of what his healer had done for him

"You are His disciple": this statement is not quite accurate (not yet), because the healed man did not yet have adequate knowledge of Jesus' identity

"we are disciples of Moses": this statement is false; if they were true disciples of Moses, then they would have followed the Messiah, to whom Moses pointed