Matthew Poole and continuators on 1 Corinthians 14:6

6 Now, brethren, if I come unto you speaking with tongues, what shall I profit you , except I shall speak to you, either by revelation , or by knowledge , or by prophecy , or by doctrine? .

God hath given me an ability to speak with Tongues, suppose I should come to you speaking in the Arabian, Scythian, or Parthian language, what good would it do you? How should it any way profit you?

except I should speak to you, either by Revelation, &c. Some make these four things distinct each from other: others think, that they all signifie no more, than the interpreting mentioned in the former verse. Those who distinguish them, say, By Revelation is meant the Explication of the Types and Figures of the Old Testament; or some such Revelation as Iohn had in Patmos; or the expounding the Mysteries of the Gospel.

By Knowledge they understand the knowledge of History, or any other ordinary knowledge.

By Prophecy, the Explication of the difficult Texts of Scripture.

By Doctrine, catechistical or practical Doctrine. But these are all but uncertain guesses; the sense is plainly no more, than if I should come speaking with unknown Tongues, and no way by interpretation make what I say intelligible unto you.

Marginal references: Vers. 26.