Matthew 18:27
And out of pity for him, the master of that servant released him and forgave him the debt. The king's response transcends what the servant asked: the servant asked for patience (more time to repay); the king gave forgiveness (cancellation of the entire debt). The pity that drove the forgiveness is the emotion of compassion that throughout Matthew's Gospel produces miraculous provision (Matthew 9:36, 14:14, 15:32). The entire unpayable debt is cancelled.