John Calvin on Acts 15:33-35

33. They were let go in peace. That is, when they departed, the brethren, in taking their leave of them, did wish them well, as friends use to do. And there is synecdoche in this member; because the one of the two did only return to Jerusalem. And in the text there is a correction added immediately, that it seemed good to Silas to tarry there; but when Luke joineth them both together, his meaning is only to declare that the Church was quiet before they thought upon any returning. At length he addeth that Paul and Barnabas, so long as they were at Antioch, gave themselves to teaching, and did continue in this work, “Intentos fuisse ad docendum, et in hoc opere assiduos,” were intent on teaching, and assiduous in the work. and yet did they give place to many more. “Aliis compluribus,” to several other persons. Whereby it appeareth, that they had all one and the same desire without grudging, “Sine aemulatione,” without rivalship. so that they joined hand in hand to do good; though it seemeth that he maketh mention of many more of set purpose, lest we should think that, after that Paul and Barnabas were departed, that Church was destitute, which did flourish in abundance of teachers. Moreover, the blessing of God, which began straightway to appear again in that Church, is now again commended and extolled, which Church Satan went about “Nuper molitus erat,” had lately plotted. by his ministers miserably to scatter and lay waste.

Acts 15:36-41

36. And after a few days Paul said to Barnabas, Returning, let us now visit our brethren throughout all cities wherein we have preached the word of the Lord, and see how they do. 37. And Barnabas counseled to take John, whose surname was Mark. 38. But Paul besought him, that he which slid back from them in Pamphylia, and had not gone with them to the work, might not be taken to their company. 39. And the contention waxed so hot between them, that they parted company; and Barnabas having taken to him Mark, sailed to Cyprus. 40. But Paul having chosen Silas, journeyed, being committed to the grace of God by the brethren. 41. And he went through Syria and Cilicia, establishing the churches