The Apostle Paul
1 Corinthians 14:6ESV·traditional attribution

Now, brothers, if I come to you speaking in tongues, how will I benefit you unless I bring you some revelation or knowledge or prophecy or teaching?

John Calvin Reformed @genevareformer

6. Now, brethren, if I should come. He proposes himself as an example, because in his person the case was exhibited more strikingly “Estoit plus propre pour leur imprimer ce qu’il dit;” — “Was the more calculated to impress upon them what he says.” The Corinthians experienced in themselves abundant fruit from his doctrine.

Matthew Henry Presbyterian @wholebiblehenry

In this paragraph he goes on to show how vain a thing the ostentation of speaking unknown and unintelligible language must be. It was altogether unedifying and unprofitable (Co1 14:6): If I come to you speaking with tongues, what will it profit you, unless I speak to you by revelation, or by knowledge, or by prophesying, or by doctrine?

Commenting on 1 Corinthians 14:6-14

John Gill Reformed Baptist @doctorgill

Now, brethren, if I come unto you speaking with tongues,.... The apostle exemplifies this matter in himself, and supposes it his own case, that should he who was the apostle of the Gentiles, and to be received by them as such, when he came to them, come with this gift of tongues, which he was capable of, as much, or more than any, see Co1...