Luke 5:21
The Pharisees and the teachers of the law began thinking to themselves, who is this fellow who speaks blasphemy? Who can forgive sins but God alone? — the internal reaction of the scribes and Pharisees who have come to observe and evaluate: who speaks blasphemy, who can forgive sins but God alone? The logic is correct: only God can forgive sins. The error is the unstated premise that Jesus is merely a man.