How do we know God's mercy is for sinners like Rahab?

Rahab's story is a powerful testament to God's mercy for the worst of sinners. Despite her being a harlot, God chose to reveal His plan of salvation to her through the spies. This truth is affirmed in Hebrews 11:31, where her faith is praised: 'By faith Rahab the harlot did not perish with those who did not believe.' Moreover, the scarlet thread she tied in her window symbolizes the blood of Christ, representing the only means by which she and her family could be saved from destruction. This narrative shows that no matter how deep one may have fallen into sin, God's grace is greater and accessible to those who turn to Him in faith.