Luke 19:22

He says to him, 'Out of your own mouth will I judge you, O evil servant! You knew that I am a harsh man, taking up what I did not lay down, and reaping where I did not sow;

Matthew 12:37

for by your words you shall be justified, and by your words you shall be condemned."

Matthew 26:65

Then the high priest rent his garments, saying, "He blasphemed! What further need have we of witnesses? Behold, ye just now heard the blasphemy!

Treasury of Scripture Knowledge

Summary

Thine own mouth condemneth thee, and not I: yea, thine own lips testify against thee.

Bible References

Own mouth

Matthew 12:37
for by your words you shall be justified, and by your words you shall be condemned."
Matthew 26:65
Then the high priest rent his garments, saying, "He blasphemed! What further need have we of witnesses? Behold, ye just now heard the blasphemy!
Luke 19:22
He says to him, 'Out of your own mouth will I judge you, O evil servant! You knew that I am a harsh man, taking up what I did not lay down, and reaping where I did not sow;