What does the Bible say about the role of faith in salvation?

In Romans 4:16, it is stated that salvation is of faith so that it may be by grace, meaning that faith itself is a divine gift rather than a human achievement. The work of believing is initiated and enabled by God through the Holy Spirit, and it is not something we can do by our own power or will. The faith that justifies us is the faithfulness of Jesus Christ, not our own belief. Thus, salvation depends entirely on God’s grace and Christ's righteousness rather than our effort, affirming that we are unable to seek or understand spiritual truth without divine intervention (Romans 3:11, 1 Corinthians 2:14).