Lord, let their wrongdoing fall back on their own heads

O Lord my God, I put my faith in you; take me out of the hands of him who is cruel to me, and make me free;
Psalms 7:1

He has made a hole deep in the earth, and is falling into the hole which he has made
Psalms 7:15

His wrongdoing will come back to him, and his violent behaviour will come down on his head.
Psalms 7:16