Psalms 7:12-17

If anyone does not repent, he will sharpen his sword;  he has strung his bow and made it ready.  He has prepared his deadly weapons; he tips his arrows with fire.  See, the wicked one is pregnant with evil, conceives trouble, and gives birth to deceit.  He dug a pit and hollowed it out but fell into the hole he had made.  His trouble comes back on his own head; his own violence comes down on top of his head.  I will thank the LORD for his righteousness; I will sing about the name of the  LORD Most High.