How do we know that faith alone is enough for salvation?

The biblical account of Rahab illustrates that genuine faith is both a belief and an action. In James 2:25, Rahab's justification by works is highlighted; she acted on her faith by hiding the spies and seeking salvation for her family. This shows that while faith alone justifies, the evidence of that faith is found in the works that follow. Ephesians 2:8-9 emphasizes that we are saved by grace through faith, not of works, but true faith naturally results in a life that seeks to obey God's commands.