1 Timothy 4:6-9

By pointing out such things to the brothers and sisters, you will be a good servant of Christ Jesus, having nourished yourself on the words of the faith and of the good teaching that you have followed. But reject those myths fit only for the godless and gullible, and train yourself for godliness. 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.” This saying is trustworthy and deserves full acceptance.