Proverbs 27:19

As in water face corresponds to face, so the heart of man to man.

Genesis 6:5

And GOD saw that the wickedness of man was great in the earth and that every imagination of the thoughts of his heart was only evil continually.

Psalm 33:15

He fashioned all of their hearts; he considers all their works.

Mark 7:21

For from within, out of the heart of men, come forth the evil thoughts, the adulteries, the fornications, the murders,

James 1:22-25

But be ye doers of the word, and not hearers only, deceiving your own selves.

Treasury of Scripture Knowledge

Summary

As in water face answereth to face, so the heart of man to man.

Bible References

In

James 1:22
But be ye doers of the word, and not hearers only, deceiving your own selves.

So

Genesis 6:5
And GOD saw that the wickedness of man was great in the earth and that every imagination of the thoughts of his heart was only evil continually.
Psalm 33:15
He fashioned all of their hearts; he considers all their works.
Mark 7:21
For from within, out of the heart of men, come forth the evil thoughts, the adulteries, the fornications, the murders,