The world's greatest evil is a "deception of choice". Evil enters the soul through the free will, with our ability to choose. Evil labels the greatest sin as a "woman's choice" and a "human right", but God never gave us the right to choose or deny "life" unless medically necessary.
Abortion is the devil's human sacrifice. The Father sent his only begotton son to be the sacracifial lamb. Jesus sacrificed himself, in obediance to the Father, for the sake of our sins. The devil needed a human sacrifice also to propagate his own power.