From today's devotional reading from Peterson writing for Howard Butt's ministry:
The Pharisees and their scribes were complaining to his disciples, saying, "Why do you eat and drink with tax collectors and sinners? " [Luke 5:30] The error persists: despite very clear evidence to the contrary, men and women insist on thinking of Christians as the good people whom God likes. But Jesus said that Christians are the bad people whom God calls to salvation. The church, like a hospital, is full of sick people in the process of being healed, not well people displaying their prowess.