The Apostle Paul
1 Corinthians 1:29BSB·traditional attribution

so that no one may boast in His presence.

John Calvin Reformed @genevareformer

29. That no flesh should glory Though the term flesh here, and in many passages of Scripture, denotes all mankind, yet in this passage it carries with it a particular idea; for the Spirit, by speaking of mankind in terms of contempt, beats down their pride, as in Isaiah 31:3 — The Egyptian is flesh and not spirit It is a sentiment that is worthy...

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

John Gill Reformed Baptist @doctorgill

That no flesh should glory in his presence. That is, "in the presence of God", as some copies, and the Arabic and Ethiopic versions read; not in their blood, birth, families, lineage, and natural descent; nor in their might, power, and dominion; nor in their riches, wealth, and substance; nor in their wisdom, learning, and parts: for however these may be gloried in before men, yet not before God.