John Chrysostom — on 1Tim 4:7 (Homily on 1 Timothy 12)

“"But refuse profane and old wives' fables, and exercise thyself rather unto godliness." By these are meant Jewish traditions, and he calls them "fables," either because of their falsehood or their unseasonableness. For what is seasonable is useful, but what is unseasonable is not only useless but injurious. Suppose a man of adult age to be suckled by a nurse, would he not be ridiculous, because it is unseasonable? "Profane and old wives' fables," he calls them, partly because of their obsoleteness, and partly because they are impediments to faith. For to bring souls under fear, that are raised above these things, is an impious commandment. "Exercise thyself unto godliness." That is, unto a pure faith and a moral life; for this is godliness. So then we need "exercise." "But exercise thyself unto godliness," that is, unto a pure life, and the most virtuous conversation. He that exerciseth himself, even when it is not the season of contest, acts always as if he were contending, practices abstinence, endures all toils, is always anxious, endures much labor. "Exercise thyself," he saith, "unto godliness; for bodily exercise profiteth little, but godliness is profitable for all things, having the promise of the life that now is, and of that which is to come." And why, says one, does he mention this bodily exercise? To show by comparison the superiority of the other, in that the former is of no solid advantage, though it is attended with many toils, whilst the latter has a lasting and abundant good. As when he bids women "adorn themselves, not with broidered hair, or gold, or costly array: but which becometh women possessing godliness; with good works." (1 Tim. ii. 9, 10)”