Matthew 15:19

Then Yahweh saw that the evil of man was great on the earth, and that every intent of the thoughts of his heart was only evil continually.

Then Balaam said to the donkey, “Because you have made a mockery of me! If there had been a sword in my hand, I would have killed you by now.”

Guard your heart with all diligence, For from it flow the springs of life.

The scheming of folly is sin, And the scoffer is an abomination to men.

but I say to you that everyone who looks at a woman to lust for her has already committed adultery with her in his heart.

And the tongue is a fire, the very world of unrighteousness; the tongue is set among our members as that which defiles the entire body, and sets on fire the course of our existence, and is set on fire by hell.