John Chrysostom

"According to the Grace of God which was given unto me, as a wise master-builder I laid a foundation." In this place he calls himself wise, not exalting himself, but to give them an ensample, and to point out that this is a wise man's part, to lay a foundation. You may observe as one instance of his modest bearing, that in speaking of himself as wise, he allowed not this to stand as though it were something of his own; but first attributing himself entirely unto God, then and not till then calls himself by that name. …

Homily on 1 Corinthians 8 ↗

Theophylact of Ohrid

He calls himself a wise master builder not out of arrogance, but wishing to show that it is proper for a wise master builder to lay such a foundation, that is, Christ. And that he said this truly not out of arrogance is evident from his words: "according to the grace of God given to me," that is, my wisdom is not my own doing, but a gracious gift of God.

Commentary on 1 Corinthians ↗

Clement of Alexandria

Now the apostle, in contradistinction to gnostic perfection, calls the common faith the foundation, and sometimes milk, writing on this wise: "Brethren, I could not speak to you as to spiritual, but as to carnal, to babes in Christ. I have fed you with milk, not with meat: for ye were not able. Neither yet are ye now able. For ye are yet carnal: for whereas there is among you envy and strife, are ye not carnal, and walk as men?" Which things are the choice of those men who are sinners. …

The Stromata Book 5 ↗

Thomas Aquinas

Then when he says, according to the commission of God, he discusses the varieties of reward; and because rewards are distinguished according to the varieties of labor. First he deals with the varieties of labor; secondly with the diverse reward (v. 12). In regard to the first he does two things: First, he distinguishes the varieties of labor; secondly, he sounds a warning (v. 10). …

Commentary on 1 Corinthians ↗