How do we know faith is the evidence of salvation?

Faith as the evidence of salvation is rooted in the belief that one is justified by faith apart from the deeds of the law (Romans 3:28). In the New Testament, Paul asserts that faith is a gift from God, and it is through faith that we access God's grace. This means that true faith reflects a reliance on Christ's finished work rather than one’s own efforts or conduct, fulfilling the requirements of salvation. Good works, while important, are not the foundation of salvation, serving instead as the fruit of genuine faith.