Again, there is a choice to be made, as well as a tragic ending. If we have to pay our own life debt for our sins against God, we have no hope, which is what happens if we will not forgive others. This parable puts the lie to the doctrine of eternal security, as well as the idea of irresistible grace that overwhelms us and causes us to float into goodness. Those ideas are attractive and comforting, but for them to be true, we would have take out major sections of Scripture, such as many of the parables.