What does the Bible say about Thomas's doubt?

In John 20, Thomas is characterized as a skeptic among the disciples who refuses to believe in the resurrection of Jesus until he can see and touch His wounds. This narrative shows that even among the apostles, doubt can arise, yet it also illustrates the mercy and patience of Christ toward those struggling with faith. Jesus addresses Thomas directly, offering peace and presenting His wounds as tangible evidence of His resurrection, highlighting that faith is ultimately a gift from God and not a product of human will. This event serves as a profound reminder of Christ's understanding of human weakness and His commitment to reveal Himself to those in doubt.