Theophylact of Ohrid — as excerpted in the Catena Aurea on Luke 6:39-42

“But these words are applicable to all, and especially to teachers, who while they punish the least sins of those who are put under them, leave their own unpunished. Wherefore the Lord calls them hypocrites, because to this end judge they the sins of others, that they themselves might seem just. Hence it follows, Thou hypocrite, first cast the beam out of thine own eye, &c.”