John 8:9

But when they heard his answer, being convicted by their own conscience, they went out one by one, beginning at the elder, even to the last. And Jesus was left alone, and the woman standing in the midst of the people.

Romans 2:15

and shew the work of the law written on their hearts, their conscience witnessing together with it, and their own thoughts either accusing, or excusing them,)

1 John 3:20

For, if our heart condemn us, God is still greater than our heart, and knoweth all things.

Treasury of Scripture Knowledge

Summary

The king said moreover to Shimei, Thou knowest all the wickedness which thine heart is privy to, that thou didst to David my father: therefore the LORD shall return thy wickedness upon thine own head;

Bible References

Thou knowest

John 8:9
But when they heard his answer, being convicted by their own conscience, they went out one by one, beginning at the elder, even to the last. And Jesus was left alone, and the woman standing in the midst of the people.
Romans 2:15
and shew the work of the law written on their hearts, their conscience witnessing together with it, and their own thoughts either accusing, or excusing them,)
1 John 3:20
For, if our heart condemn us, God is still greater than our heart, and knoweth all things.