Luke
Acts 15:37BSB·traditional attribution

Barnabas wanted to take John, also called Mark.

John Calvin Reformed @genevareformer

37. And Barnabas gave counsel. Luke doth here set down that doleful disagreement which ought to make all the godly afraid for just causes. The society of Paul and Barnabas was consecrated by the heavenly oracle. They had long time labored, being of one mind, under this yoke whereunto the Lord had tied them; they had, by many experiences, tried [felt] the excellent favor of...

Matthew Henry Presbyterian @wholebiblehenry

We have seen one unhappy difference among the brethren, which was of a public nature, brought to a good issue; but here we have a private quarrel between two ministers, no less men than Paul and Barnabas, not compromised indeed, yet ending well. I.

Commenting on Acts 15:36-41

John Gill Reformed Baptist @doctorgill

But Paul thought not good to take him with them,.... He did not think him worthy, or a fit and proper person to go with them, as the word used seems to signify, and therefore he refused to take him: the Syriac version renders it, "but Paul would not take him with them"; and, the Ethiopic version is very expressive, though it renders it in...