Just wonderin’

If a Christian believes that God created him in the womb,

“ For you formed my inward parts; you knitted me together in my mother's womb...” (Psalm 139:13)

that it was He and not just mere human biology that constructed the body of the Christian,

then why would a Christian have a problem with God’s creation (choosing) of a Christian’s rebirth?

”Jesus answered him, "Truly, truly, I say to you, unless one is born again, he cannot see the kingdom of God.” (John 3:3).

If we did not have initiative or a choice in the first birth, why would a Christian believe that he has initiative or choice in the second?