The Apostle Paul
1 Corinthians 14:4ESV·traditional attribution

The one who speaks in a tongue builds up himself, but the one who prophesies builds up the church.

John Calvin Reformed @genevareformer

4. He that speaketh in another tongue, edifieth himself. In place of what he had said before — that he speaketh unto God, he now says — he speaketh to himself But whatever is done in the Church, ought to be for the common benefit. Away, then, with that misdirected ambition, which gives occasion for the advantage of the people generally being hindered!

Matthew Henry Presbyterian @wholebiblehenry

The apostle, in the foregoing chapter, had himself preferred, and advised the Corinthians to prefer, Christian charity to all spiritual gifts. Here he teaches them, among spiritual gifts, which they should prefer, and by what rules they should make comparison. He begins the chapter, I. With an exhortation to charity (Co1 14:1): Follow after charity, pursue it.

Commenting on 1 Corinthians 14:1-5

John Gill Reformed Baptist @doctorgill

He that speaketh its an unknown tongue,.... Be it the Hebrew language, or any other; some copies, and the Ethiopic version, read, "with tongues": edifieth himself; his heart may be warmed, his affections raised, his devotion kept up, and he be in a very spiritual and comfortable frame, knowing and understanding what he himself says: but he that prophesieth, edifieth the church: which is the...