Luke 6:41

Why do you continue to look at the tiny speck in your brother's eye, but pay no attention to the heavy girder in your own eye?

John 8:7

When the questioners persisted, Jesus straightened up and said to them, "Let the one of you who is sinless be the first one to cast a stone at her."

Matthew 7:3-5

Why do you keep watching the tiny speck in your brother's eye, but pay no attention to the girder in your own?

John 8:40-44

But right now you are trying to kill me, a man who has told you the truth that He has learned from God. Abraham never did that.

Romans 2:1

Therefore, you have no excuse, whoever you are, who pose as a judge of others, for when you pass judgment on another, you condemn yourself, for you who pose as a judge are practicing the very same sins yourself.

Romans 2:21-24

you who teach others, do you not teach yourself too? You who preach that men should not steal, do you steal yourself?

James 1:24

for he looks and then goes off and at once forgets how he looked.

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
Why do you keep watching the tiny speck in your brother's eye, but pay no attention to the girder in your own?
Romans 2:1
Therefore, you have no excuse, whoever you are, who pose as a judge of others, for when you pass judgment on another, you condemn yourself, for you who pose as a judge are practicing the very same sins yourself.

But

John 8:7
When the questioners persisted, Jesus straightened up and said to them, "Let the one of you who is sinless be the first one to cast a stone at her."
James 1:24
for he looks and then goes off and at once forgets how he looked.