Matthew Poole and continuators on Jeremiah 29:7

7 And seek the peace of the city, whither I have caused you to be carried away captives , and pray unto the LORD for it , for in the peace thereof shall ye have peace .

That is, seek to God for it, or rather, live peaceably in it, and by all lawful means seek the welfare of it, do not raise any tumults or seditions, nor take part with those that do.

And while your Captivity lasts do you pray for it, (from whence those who think that Christ hath added new moral precepts, and reckon this precept of praying for enemies as one, may understand, that praying for enemies was but a branch of that love to our Neighbour, which God required under the Old Testament) for it was lawful for them to pray against Babylon at other times, Psal. 137.8. Ier. 51.35. but when God hath put a yoke upon our necks, we must patiently wait until he takes it off. The Lawyers say that Protection requireth Allegiance to Governours; This Text lets us know also that it requireth our prayers for them; though they be Conquerours and Tyrants.

For God having by his providence cast us under their power, our peace dependeth upon theirs.