We often think of forgiveness as having no limits. But that's not what the Bible teaches. God's grace, and ours, too, does have limits. But what are those limits, how do we encounter them, and what do they do to our relationships? In this exposition of Matthew 18:15-20, Malcolm explores how the love of Christ acts as mediator between Christians, and how people can, tragically, place themselves outisde the limits of forgiveness.