For bodily exercise has some value, but godliness has value for all things, having the promise of the life which is now, and of that which is to come.
And of that which is to come - Eternal life. And it is the only thing that “promises” such a life. Infidelity makes no “promise” of future happiness. Its business is to take away all the comforts which religion gives, and to leave people to go to a dark eternity with no promise or hope of eternal joy. Vice “promises” pleasures in the present life, but only to disappoint its votaries here; it makes no promise of happiness in the future world. There is nothing that furnishes any certain “promises” of happiness hereafter, in this world or the next, but religion. God makes no promise of such happiness to beauty, birth, or blood; to the possession of honors or wealth; to great attainments in science and learning, or to the graces of external accomplishment. All these, whatever flattering hopes of happiness they may hold out here, have no assurance of future eternal bliss. It is not by such things that God graduates the rewards of heaven, and it is only “piety” or “true religion” that furnishes any assurance of happiness in the world to come.