How do we know that salvation is an act of God and not of man?

The doctrine of salvation emphasizes that it is solely the work of God, as indicated in Scripture. Romans 3:10-12 states that none seek after God, and we are all dead in our sins. This illustrates that without the sovereign grace of God, we would not recognize our need for salvation or turn to Christ. The call to 'rise up and come away' signifies God's effectual calling to His people, awakening them from spiritual death and enabling them to respond in faith. Ephesians 2:8-9 emphasizes that it is by grace through faith that we are saved, not as a result of works, so that no one can boast. Thus, the entirety of salvation is rooted in God's initiative and grace.