A few verses before Jesus' instruction in Matthew 18 about church discipline, he provides us with help for determining whether an individual is characteristically repentant: would the person be willing to cut off a hand or tear out an eye rather than repeat the sin (Matt. 18:8-9)? That is to say, is he or she willing to do whatever it takes to fight against the sin? Repenting people, typically, are zealous about casting off their sin. That's what God's Spirit does inside of them. When this happens, one can expect to see a willingness to accept outside counsel. A willingness to inconvenience their schedules. A willingness to confess embarrassing things. A willingness to make financial sacrifices or lose friends or end relationships.