“For what have I to do with judging outsiders? Do you not judge those who are within the church? But those who are outside, God judges” (1 Corinthians 5:12).
The responsibility of Christian belief, behavior, and witness belongs to the church alone. The poorest substitute for this obligation is when the church chooses, instead, to criticize the world for its behavior. It’s unreasonable to expect an unregenerate world to live by God’s standard. Is this not why he sent Jesus? Is this not why Jesus has sent us?