How do we know that salvation is solely God's work?

The doctrine of salvation being solely God's work is firmly rooted in scripture. Jesus mentions that He has been given power over all flesh to give eternal life to those the Father has given Him (John 17:2). This clearly demonstrates that salvation is not a response to human action but rather an act of divine sovereignty where God chooses a people for Himself—highlighted in Ephesians 1:4 which states that believers were chosen before the foundation of the world. Additionally, Romans 9:11 reinforces the concept that God's purpose in election stands firmly in His will, not by human efforts. Thus, the salvation that believers experience is a gift of grace from God, ensuring He gets all the glory.