Do not take revenge, my friends,
but leave room for God's wrath,
for it is written:
"It is mine to avenge; I will repay, "
says the Lord. On the contrary:
"If your enemy is hungry, feed him;
if he is thirsty, give him something
to drink. In doing this, you will heap
buring coals on his head."
Do not be overcome by evil,
but overcome evil with good.
Romans 12:19-21 (NIV)