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, [1] and yet did they give place to many more. [2] Whereby it appeareth, that they had all one and the same desire without grudging, [3] 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 [4] by his ministers miserably to scatter and lay waste.

Footnotes

1 - "Intentos fuisse ad docendum, et in hoc opere assiduos," were intent on teaching, and assiduous in the work.

2 - "Aliis compluribus," to several other persons.

3 - "Sine aemulatione," without rivalship.

4 - "Nuper molitus erat," had lately plotted.

A space - For some time.
They were let go in peace - An expression implying that they departed with the affectionate regard of the Christians to whom they had ministered, and with their highest wishes for their prosperity, 1-Corinthians 16:11; 2-John 1:10.
Unto the apostles - At Jerusalem. Many mss., however, instead of "unto the apostles," read "unto those who had sent them." The sense is not materially different.

They were let go - That is, both had liberty to depart; but Silas chose to stay a little longer with the brethren.

And after they had tarried [there] a space, they were let go in (q) peace from the brethren unto the apostles.
(q) This is a Hebrew idiom, which is the same as saying, "as the brethren wished them all prosperous success, and the church dismissed them with good leave."

And after they had tarried there a space,.... How long is not certain; the Arabic version renders it "a year"; and it is probable enough, they might stay there so long, till things were thoroughly settled, which were thrown into great disorder and confusion, by the pleaders for circumcision:
they were let go in peace; that is, they were dismissed, and went away with the leave and consent of the church; who returned them thanks for the service and good offices they had done them, and wished them all peace, prosperity, and happiness, both in soul and body, and great success in their ministrations wherever they went: and as they were dismissed in peace, they left the church in perfect peace; an end being put to the controversy about circumcision, which was raised among them; and the members of the church being agreed in their sentiments, and heartily united in their affections to one another: and thus Judas and Silas were honourably dismissed
from the brethren, at Antioch,
to the Apostles, at Jerusalem; the Alexandrian copy, and Beza's ancient copy, the Vulgate Latin, and Ethiopic versions, read, "to them that sent them"; and so include, with the apostles, the elders, and brethren at Jerusalem, who wrote the letter to the church at Antioch, and sent it by them; and it was proper that they should return to them, and give them an account of the success of it, how it was received, and what good it had done.

were let go in peace--with peace, as the customary parting salutation.