In Luke 3:7–14, John the Baptist boldly confronts crowds, Pharisees, and Sadducees at the Jordan River, calling them a "brood of vipers" and warning against false repentance based on Abrahamic heritage or religious works. He demands they "bear fruits in keeping with repentance," emphasizing that genuine faith in God produces visible change, or face judgment like trees cut down and thrown into the fire. When asked "What should we do?", John gives practical examples: share clothing and food with the needy, collect only required taxes honestly, and soldiers should avoid extortion while being content with their wages. True repentance, the flip side of saving faith, begins with recognizing sin's ugliness, grasping Christ's mercy, and pursuing radical holiness that transforms daily life.