Gen 3:15, Eph 2:16, Isa 53:12, Heb 2:14, 1 Jn 3:8
In the Old Testament it was foretold that Christ would die on the cross and destroy Satan. (Gen 3:15)
Gen 3:15 And I will put enmity between thee and the woman, and between thy seed and her seed; it shall bruise thy head, and thou shalt bruise his heel.
Jesus, the Christ, annihilated the enmity on the cross and triumphed. (Col 2:13-15, Eph 2:16, Heb 2:14, 1 Jn 3:8)
Col 2:13 And you, being dead in your sins and the uncircumcision of your flesh, hath he quickened together with him, having forgiven you all trespasses; 14 Blotting out the handwriting of ordinances that was against us, which was contrary to us, and took it out of the way, nailing it to his cross; 15 And having spoiled principalities and powers, he made a shew of them openly, triumphing over them in it.
Eph 2:16 And that he might reconcile both unto God in one body by the cross, having slain the enmity thereby:
Heb 2:14 Forasmuch then as the children are partakers of flesh and blood, he also himself likewise took part of the same; that through death he might destroy him that had the power of death, that is, the devil;
1 Jn 3:8 He that committeth sin is of the devil; for the devil sinneth from the beginning. For this purpose the Son of God was manifested, that he might destroy the works of the devil.