"So the Lord said to the serpent (the Devil)...
"I will put enmity between you and the woman, and between your offspring and hers; he [Jesus Christ] will crush your head."
Fast forward - "The reason the Son of God appeared was to destroy the devil's work. (1 John 3:8)
"...having disarmed the powers and authorities, he made a public spectacle of them, triumphing over them by the cross." (Colossians 2:15)
Continuing - "...and you will strike his heel." (Genesis 3:15)
"He [the devil] was a murdered from the beginning..." (John 8:44) who came to "...steal and kill and destroy." (John 10:10)
IT'S A GOSPEL ISSUE!