How do we know Rahab was a true believer?

Rahab is identified as a true believer in several New Testament scriptures, particularly in Hebrews 11:31, where her actions are credited to her faith in God. Additionally, James 2:25 states, 'Likewise also was not Rahab the harlot justified by works, when she had received the messengers and sent them out another way?' This provides clear evidence that her belief was genuine and effective. Rahab's faith was not merely intellectual assent; it was accompanied by actions that demonstrated her trust in the God of Israel, which ultimately led to her salvation and inclusion in the lineage of Christ. Thus, her transformation from a harlot to a believer in the sovereign grace of God confirms her true faith.