Luke 6:41

But why dost thou look at the chaff in thy brother's eye, and takest no notice of the beam that is in thine own?

John 8:7

And as they continued asking Him, He raised himself up and said unto them, "Let him that is without sin among you, first cast a stone at her."

Matthew 7:3-5

And why dost thou look at the splinter in thy brother's eye, but takest no notice of the beam in thine own eye?

John 8:40-44

but now ye seek to kill me, who have told you the truth which I have heard from God: Abraham did not thus.

Romans 2:1

Therefore thou art inexcusable, O man, whoever thou art, that judgest: for wherein thou judgest another, thou condemnest thyself; for thou that judgest dost the same things.

Romans 2:21-24

Thou then, who teachest another, teachest thou not thyself? Thou, that preachest a man should not steal, dost thou steal?

James 1:24

who beheld himself, and went away, and immediately forgot what manner of man he was.

Treasury of Scripture Knowledge

Summary

And why beholdest thou the mote that is in thy brother's eye, but perceivest not the beam that is in thine own eye?

Bible References

Why

Matthew 7:3
And why dost thou look at the splinter in thy brother's eye, but takest no notice of the beam in thine own eye?
Romans 2:1
Therefore thou art inexcusable, O man, whoever thou art, that judgest: for wherein thou judgest another, thou condemnest thyself; for thou that judgest dost the same things.

But

John 8:7
And as they continued asking Him, He raised himself up and said unto them, "Let him that is without sin among you, first cast a stone at her."
James 1:24
who beheld himself, and went away, and immediately forgot what manner of man he was.