Mat 18:21 Then Peter came and said to Him, "Lord, how often shall my brother sin against me and I forgive him? Up to seven times?" Mat 18:22 Jesus *said to him, "I do not say to you, up to seven times, but up to seventy times seven.We are at that number 7 again. If you remember 7 means completeness in the bible. By the rabbinical standards of the time the rabbis said to forgive 3 times. It is conjectured that Peter was either trying to be generous or use the number 7 to me complete the forgiveness cycle. Jesus answer was seventy time seven or 490. That is not exactly what he meant. He did not want any number to be considered the end of forgiveness. We are to try to bring the person back into a Christian life at all times.
Mat 18:23 "For this reason the kingdom of heaven may be compared to a king who wished to settle accounts with his slaves. Mat 18:24 "When he had begun to settle them, one who owed him ten thousand talents was brought to him. Mat 18:25 "But since he did not have the means to repay, his lord commanded him to be sold, along with his wife and children and all that he had, and repayment to be made. Mat 18:26 "So the slave fell to the ground and prostrated himself before him, saying, 'Have patience with me and I will repay you everything.' Mat 18:27 "And the lord of that slave felt compassion and released him and forgave him the debt. Mat 18:28 "But that slave went out and found one of his fellow slaves who owed him a hundred denarii; and he seized him and began to choke him, saying, 'Pay back what you owe.' Mat 18:29 "So his fellow slave fell to the ground and began to plead with him, saying, 'Have patience with me and I will repay you.' Mat 18:30 "But he was unwilling and went and threw him in prison until he should pay back what was owed. Mat 18:31 "So when his fellow slaves saw what had happened, they were deeply grieved and came and reported to their lord all that had happened. Mat 18:32 "Then summoning him, his lord *said to him, 'You wicked slave, I forgave you all that debt because you pleaded with me. Mat 18:33 'Should you not also have had mercy on your fellow slave, in the same way that I had mercy on you?' Mat 18:34 "And his lord, moved with anger, handed him over to the torturers until he should repay all that was owed him. Mat 18:35 "My heavenly Father will also do the same to you, if each of you does not forgive his brother from your heart."It would seem obvious that if you had been forgiven the large debt and now you owe nothing that the minor debt would have been insignificant. Since the slave was unwilling to do what his master did he paid a price. So how does this parable affect us? Jesus has forgiven us of all our sins if we repent. We should also be able to forgive a single sin. We need to see how Jesus handled things and we should emulate that.