<p>12:18 <i>But now has God set the members each one of them in the body, even as it pleased Him- </i>See on :17. If the Corinthians had accepted their given gifts and roles to play, they would not have been interested in usurping the place of others. God has gone to so much trouble to potentially enable the perfect functioning of the church; to the extent that according to John 17, the unity / perfect function of the body should be enough in itself to convert the world. But a self focused approach and refusal to accept the gifts of the Spirit meant that this wonderful potential didn't work out.</p>