Romans 8:5 : For they that are after the flesh mind the things of the flesh; but they that are after the Spirit the things of the Spirit. To mind the things of the flesh is to give our time and attention to the things of this life. To do so is to leave God and our eternal welfare out of consideration. We need to be careful, for it is easy for us in our struggles to make a living to forget God and look only to our material interests. To mind the things of the spirit is to look to the things that fit the spirit for acceptable service to God in this life and that will prepare it for the joys of the next life.