John Calvin Reformed @genevareformer

14. I thank my God. In these words he reproves very sharply the perversity of the Corinthians, which made it necessary for him to avoid, in a manner, a thing so sacred and honorable as that of the administration of baptism. Paul, indeed, would have acted with propriety, and in accordance with the nature of his office, though he had baptized ever so many.

Matthew Henry Presbyterian @wholebiblehenry

Here the apostle gives an account of his ministry among them. He thanks God he had baptized but a few among them, Crispus, who had been a ruler of a synagogue at Corinth (Act 18:8), Gaius, and the household of Stephanas, besides whom, he says, he did not remember that he had baptized any. But how was this a proper matter for thankfulness?

Commenting on 1 Corinthians 1:14-16

John Gill Reformed Baptist @doctorgill

I thank God that I baptized none of you,.... The Alexandrian copy and the Syriac version read, "I thank my God"; not that the apostle disliked the ordinance of baptism, or the administration of it; and much less that he thought it criminal, or an evil in him to perform it; nor was he at any time displeased at the numbers of persons who desired...