Luke 19:22

He saith to him, Out of thy mouth will I judge thee, wicked servant! thou knewest that I was a harsh man, taking up what I laid not down, and reaping what I did not sow;

Matthew 12:37

For by thy words thou wilt be justified, and by thy words thou wilt be condemned.

Matthew 26:65

Then the highpriest rent his garments, saying, He hath spoken blasphemy; what further need have we of witnesses? See! ye have 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 thy words thou wilt be justified, and by thy words thou wilt be condemned.
Matthew 26:65
Then the highpriest rent his garments, saying, He hath spoken blasphemy; what further need have we of witnesses? See! ye have now heard the blasphemy.
Luke 19:22
He saith to him, Out of thy mouth will I judge thee, wicked servant! thou knewest that I was a harsh man, taking up what I laid not down, and reaping what I did not sow;