He Fulfilled the Ancient Promise

And I will put enmity between thee and the woman, and between thy seed and her Seed; He shall bruise thy head, and thou shalt bruise His heel. – Genesis 3:16

But this Man, after He had offered one sacrifice for sins forever, sat down at the right hand of God, from that time waiting till His enemies are made His footstool. – Hebrews 10:12,13

Observe carefully the result of His offering with regard to His enemies. He sits there “expecting till they be made His footstool.” They are crushed already; sin, which is the sting of death, has been removed, and the law which was the strength of sin has been satisfied. Sin being put away by Christ’s death, He has effectually broken the jaw teeth of all His enemies. When Jesus Christ offered Himself unto God, He fulfilled that ancient promise, “The Seed of the woman shall bruise the serpent’s head.” Christ has set His foot upon the old dragon’s head and crushed out his power. Still, however, a feeble fight is kept up; feeble, I say, for so it is to Christ, though to us it seems vigorous. Sin and Satan within us, and all Christ’s enemies without us, including death itself, are vainly raging against the Christ of God, for every day they are being put beneath His feet; every day as the battle rages the victory turns unto the enthroned Christ. In us I trust sin has been put beneath Christ’s feet; in thousands of others, it shall yet be so. Jesus upon the throne expects the growth of that victory till all His enemies shall be utterly and ignominiously beaten. “O long expected day, begin!” Father, fulfill Thy Son’s expectations, for Thy saints expect it in Him. Let the time come when every enemy shall be beneath His feet.

The Only Atoning Priest by C. H. Spurgeon