Psalms 120:4

120:4 Here’s how! With the sharp arrows of warriors,

with arrowheads forged over the hot coals.

Proverbs 25:22

25:22 for you will heap coals of fire on his head,

and the Lord will reward you.

Romans 12:20

12:20 Rather, if your enemy is hungry, feed him; if he is thirsty, give him a drink; for in doing this you will be heaping burning coals on his head.