Dietmar Rabich / Wikimedia Commons / “Dülmen, Dernekamp, Doppelbildstock — 2015 — 7284” / CC BY-SA 4.0

Briefly, Jesus was born to die.  He was born to fulfill Genesis 3:15 (below).

John 10:18 No man taketh it [his life] from me, but I lay it down of myself. I have power to lay it down, and I have power to take it again. This commandment have I received of my Father.

 

I Corinthians 2:7 But we speak the wisdom of God in a mystery, even the hidden wisdom, which God ordained before the world unto our glory:

8 Which none of the princes of this world knew: for had they known it, they would not have crucified the Lord of glory.

With his death, burial, and resurrection Jesus undid the consequences of the Fall.

Genesis 3:15 And I will put enmity between thee [satan, the serpent] and the woman [Mary], and between thy seed [those still subject to sin and satan] and her seed [Jesus]; it shall bruise thy head, and thou shalt bruise his heel [on the cross].

I John 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.

The gift is available, but must be received.

II Corinthians 5:19 To wit, that God was in Christ, reconciling the world unto himself, not imputing their trespasses unto them; and hath committed unto us the word of reconciliation.

20 Now then we are ambassadors for Christ, as though God did beseech you by us: we pray you in Christ’s stead, be ye reconciled to God.

21 For he hath made him to be sin for us, who knew no sin; that we might be made the righteousness of God in him.

John 1:12 But as many as received him, to them gave he power to become the sons of God, even to them that believe on his name:

13 Which were born, not of blood, nor of the will of the flesh, nor of the will of man, but of God.