“Do not be overcome by evil, but overcome evil with good.” (Romans 12:21)
The Christian message is that evil has been overcome by good. On the cross, Jesus defeated Satan and bore the the sin of the world whilst remaining perfectly obedient to God. Even though, he was treated unjustly and abused in the lead up to his brutal crucifixion, he did not retaliate, but bore it all to bring about our salvation. Jesus overcame evil with good.