How do we know that salvation cannot be earned by our own efforts?

The Bible makes it clear that salvation cannot be earned through our own efforts or good works. Romans 3:19 states that the law puts our mouths shut, showing our inability to justify ourselves before God. Instead, it is by grace through faith in Christ alone that we are saved. This truth emphasizes the unmerited favor of God, as expressed in Ephesians 2:8-9, which states we are saved by grace, not by works, so that no one can boast. Our understanding of salvation comes only through the revelation of the Holy Spirit, which confirms our total reliance on God's mercy.