Jn 19:30, Gen 3:15, Jn 3:8, Heb 9:11-12, Heb 10:19-20
Jesus fulfilled all the work of Christ prophesied in the Old Testament on the cross. (Gen 3:15, Jn 19:30)
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.
Jn 19:30 When Jesus therefore had received the vinegar, he said, It is finished: and he bowed his head, and gave up the ghost.
When Jesus died on the cross, He as the true King destroyed the works of Satan. (1 Jn 3:8)
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.
When Jesus died on the cross, as the true priest, He became the ransom for all our sins. (Heb 9:11-12)
Heb 9:11 But Christ being come an high priest of good things to come, by a greater and more perfect tabernacle, not made with hands, that is to say, not of this building; 12 Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us.
When Jesus died on the cross, Jesus tore His body to open the way for us to meet God. (Heb 10:19-20)
Heb 10:19 Having therefore, brethren, boldness to enter into the holiest by the blood of Jesus, 20 By a new and living way, which he hath consecrated for us, through the veil, that is to say, his flesh;