The Apostle Paul
1 Corinthians 2:9ESV·traditional attribution

But, as it is written, “What no eye has seen, nor ear heard, nor the heart of man imagined, what God has prepared for those who love him”—

John Calvin Reformed @genevareformer

9. As it is written, “What eye hath not seen.” All are agreed that this passage is taken from Isaiah 64:4, and as the meaning is at first view plain and easy, interpreters do not give themselves much trouble in expounding it. On looking, however, more narrowly into it, two very great difficulties present themselves.

Matthew Henry Presbyterian @wholebiblehenry

In this part of the chapter the apostle shows them that though he had not come to them with the excellency of human wisdom, with any of the boasted knowledge and literature of the Jews or Greeks, yet he had communicated to them a treasure of the truest and the highest wisdom: We speak wisdom among those who are perfect (Co1 2:6), among those who...

Commenting on 1 Corinthians 2:6-16

John Gill Reformed Baptist @doctorgill

But God hath revealed them unto us,.... Should it be said, that since this wisdom is so hidden and mysterious, the doctrines of the Gospel are so unknown, so much out of the sight and understanding of men, how come any to be acquainted with them?