This sermon explores Jesus' teaching on forgiveness from Matthew 18, emphasizing that forgiven people must forgive others. Through the parable of the unforgiving servant, Jesus reveals the astronomical debt we owe God and the complete forgiveness He offers through Christ's sacrifice. The message challenges believers to examine whether they truly understand God's mercy by their willingness to extend forgiveness to others. Unforgiveness is presented not just as disobedience but as evidence that one may not have genuinely received God's grace. The sermon emphasizes that forgiveness is a choice, not a feeling, and that it leads to personal freedom while reflecting the character of Christ. True disciples are marked by their ability to forgive because they comprehend the magnitude of what they've been forgiven.