Are you asking why Jesus came in the flesh roughly 2000 years ago instead of right after Adam and Eve's sin? Good question. I certainly don't have that answer. I do know that God wanted to create billions and billions of us to dwell with Him for all eternity but also wanted us to have our own free will to either accept or reject Him. So apparently the exact time of Christ's birth/death/resurrection fit perfectly into His plan for everything to play out.
The Bible does not teach Free Will....its teaches that God is Sovereign and that God chose the believer first.No where in Scripture does it teach man has a spiritual Free Will to choose God on his own.
God has an Elect who he chose before the foundation of the World (Ephesians 1:4)
Ephesians 2 "And
you hath he quickened,
who were dead in trespasses and sins;" .....then of course read 1-6 (Saved by GRACE,through Faith,and
NOT OF YOURSELVES)
John 6:44 "No man can come to me, except the Father which hath sent me
draw him"
II thessalonians 2:13 "But we are bound to give thanks alway to God for you, brethren beloved of the Lord,
because God hath from the beginning chosen you to salvation through sanctification of the Spirit and belief of the truth:"
I can give you tons a Scripture that teaches that God Elects the believer..Romans 9 "I will have mercy on whom I will have mercy, and I will have compassion on whom I will have compassion."
"Therefore hath he mercy on whom he will have mercy, and whom he will he hardeneth."
"Thou wilt say then unto me, Why doth he yet find fault? For who hath resisted his will?"
"Nay but, O man, who art thou that repliest against God? Shall the thing formed say to him that formed it, Why hast thou made me thus?
Hath not the potter power over the clay, of the same lump to make one vessel unto honour, and another unto dishonour?"
God is Sovereign and God is control...He is the Shephard and we are his sheep