Why do Christians believe that salvation is not dependent on free will?

The belief that salvation is not dependent on free will stems from the understanding of God's sovereignty over salvation, emphasizing that human will is bound by sin. As discussed, the concept of free will is often seen as a source of pride and rebellion against God, rooted in the very nature of sin that afflicts humanity post-fall. It is only through the gracious act of God that one is enabled to choose Him—demonstrating that salvation is ultimately of the Lord, as asserted in Scriptures like Ephesians 2:8-9. The cross of Christ decisively undercuts the notion of human free will in the realm of salvation, highlighting that it is through Christ’s work alone that sinners are redeemed. Thus, the focus is placed on God's mercy in choosing to save rather than on human effort or decision.