Mote (a Speck)
Anyone who has had a speck in the eye knows how small it can be, and how much it hurts. Jesus uses that picture for a quick habit of the heart. “Why beholdest thou the mote that is in thy brother’s eye, but considerest not the beam that is in thine own eye?” The mote is tiny and the beam is a plank, which makes the comparison almost funny and entirely clear. He is not saying a brother’s fault does not matter. He says to start with ourselves first, and then “shalt thou see clearly.” Matthew 7 holds the teaching, with a shorter version in Luke 6.
5 verses
Matthew
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.
Luke
And why beholdest thou the mote that is in thy brother's eye, but perceivest not the beam that is in thine own eye?
Either how canst thou say to thy brother, Brother, let me pull out the mote that is in thine eye, when thou thyself beholdest not the beam that is in thine own eye? Thou hypocrite, cast out first the beam out of thine own eye, and then shalt thou see clearly to pull out the mote that is in thy brother's eye.