The Apostle Paul
1 Corinthians 3:1BSB·traditional attribution

Brothers, I could not address you as spiritual, but as worldly—as infants in Christ.

John Calvin Reformed @genevareformer

1. And I, brethren He begins to apply to the Corinthians themselves, that he had said respecting carnal persons, that they may understand that the fault was their own — that the doctrine of the Cross had not more charms for them.

Matthew Henry Presbyterian @wholebiblehenry

Here, I. Paul blames the Corinthians for their weakness and nonproficiency. Those who are sanctified are so only in part: there is still room for growth and increase both in grace and knowledge, Pe2 3:18. Those who through divine grace are renewed to a spiritual life may yet in many things be defective.

Commenting on 1 Corinthians 3:1-4

John Gill Reformed Baptist @doctorgill

And I, brethren, could not speak unto you,.... Though the apostle was a spiritual man himself, had spiritual gifts, even the extraordinary gifts of the Spirit, could judge all things, had the mind of Christ, and was able to speak the wisdom of God in a mystery, yet could not speak it to them, as unto spiritual; not but that they had the Spirit of...