NET
8 For “physical exercise has some value, but godliness is valuable in every way. It holds promise for the present life and for the life to come.”
Darby
8 for bodily exercise is profitable for a little, but piety is profitable for everything, having promise of life, of the present one, and of that to come.
KJV
8 For bodily exercise profiteth little: but godliness is profitable unto all things, having promise of the life that now is, and of that which is to come.