When we study, it is always a good practice to study a verse or passage in context. The Parable of the Cloth and the Wineskins is a good example of why we should do this, since the parable concludes a much longer narrative. David Grabbe provides an overview of the context and then uses it to draw deeper meaning and application from the parable.
Who or what is the new man? Charles Whitaker explains that the new man is Jesus Christ Himself, living in us by His Spirit!
John Ritenbaugh suggests that the preaching the gospel to the world, held by some to be the only identifying mark of the church, is at best the beginning of a long, complex process of creating disciples and godly offspring through steady feeding and encouragement to overcome (feeding the flock). God, as a responsible parent, is not one-dimensional in assigning responsibilities to His children, but frequently shifts gears, changing circumstances, giving His begotten children a well-rounded education. God - not Satan or an incompetent ministry - engineered the massive scattering of the church of God to move it away from pernicious and fatal Laodiceanism. We need to adjust to the new situation, realizing that God has engineered these events with the real work of God in mind: making man in His image and reproducing Himself.