The Apostle Paul
1 Corinthians 1:30ESV·traditional attribution

And because of him you are in Christ Jesus, who became to us wisdom from God, righteousness and sanctification and redemption,

John Calvin Reformed @genevareformer

30. Of him are ye. Lest they should think that any of those things that he had said were inapplicable to them, he now shows the application of those things to them, inasmuch as they are not otherwise than of God For the words ye are are emphatic, as though he had said — “You have your beginning from God, who calleth those things which...

Matthew Henry Presbyterian @wholebiblehenry

We have here, I. The manner in which Paul preached the gospel, and the cross of Christ: Not with the wisdom of words (Co1 1:17), the enticing words of man's wisdom (Co1 2:4), the flourish of oratory, or the accuracies of philosophical language, upon which the Greeks so much prided themselves, and which seem to have been the peculiar recommendations of some of the heads...

Commenting on 1 Corinthians 1:17-31

Albert Barnes Presbyterian @notesbybarnes

Verse 30. But of him. That is, by his agency and power. It is not by philosophy; not from ourselves; but by his mercy. The apostle keeps it prominently in view, that it was not of their philosophy, wealth, or rank, that they had been raised to these privileges, but of God as the author. Are ye. Ye are what you are by the mercy of God, .