Pseudo-Chrysostom
Catena Aurea · Matthäusevangelium 7
And why beholdest thou the mote that is in thy brother’s eye, but considerest not the beam that is in thine own eye? Or how wilt thou say to thy brother, Let me pull out the mote out of thine eye; and, behold, a beam is in thine own eye? Thou hypocrite, first cast out the beam out of thine own eye; and then shalt thou see clearly to cast out the mote out of thy brother’s eye.
Otherwise; This is spoken to the doctors. For every sin is either a great or a small sin according to the character of the sinner. If he is a laie, it is small and a mote in comparison of the sin of a priest, which is the beam.