Luke 6:41

"And why do you behold the mote that is in your brother's eye, but consider not the beam that is in your own eye?

John 8:7

And, as they continued asking Him, He, having raised Himself up, said to them, "Let the sinless one among you first cast a stone at her."

Matthew 7:3-5

"And why do you behold the mote that is in your brother's eye, but consider not the beam in your own eye?

John 8:40-44

But now ye are seeking to kill Me, a Man Who hath told you the truth, which I heard from My Father: this Abraham did not.

Romans 2:1

Wherefore, you are without excuse, O man, every one who judges; for wherein you judge another, you condemn yourself; for you who judge practice the same things.

Romans 2:21-24

you, therefore, who teach another, do you not teach yourself? You who preach that men should not steal, do you steal?

James 1:24

for he observed himself, and went away, and straightway he 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 do you behold the mote that is in your brother's eye, but consider not the beam in your own eye?
Romans 2:1
Wherefore, you are without excuse, O man, every one who judges; for wherein you judge another, you condemn yourself; for you who judge practice the same things.

But

John 8:7
And, as they continued asking Him, He, having raised Himself up, said to them, "Let the sinless one among you first cast a stone at her."
James 1:24
for he observed himself, and went away, and straightway he forgot what manner of man he was.