John Calvin Commentary 1 Timothy 4:15

"Be diligent in these things; give thyself wholly to them; that thy progress may be manifest unto all." — 1 Timothy 4:15 (ASV)

Take heed to these things.

The greater the difficulty in faithfully discharging the ministry of the Church, the more a pastor should apply himself earnestly and with all his might; and this, not only for a short time, but with unfailing perseverance.

Paul therefore reminds Timothy that this work leaves no room for indolence or for slackening his labors, but demands the utmost industry and constant application.

That thy profiting may be manifest.

By adding these words, he means that Timothy should labor for this purpose: that through his ministry the edification of the Church may be increasingly advanced, and that corresponding results may be visible.

For it is not the work of a single day, and therefore he should strive to make daily progress.

Some refer this to Timothy, suggesting that he himself may profit more and more; but I prefer to interpret it as referring to the effect of his ministry.

The Greek words, ἐν πᾶσιν, may be translated either to all men, or in all things. There will thus be a twofold meaning: either “that all may see the progress which springs from his labors,” or “that in all respects, or in every possible way (which is the same thing), they may be visible.” I prefer the latter view.