John Gill Commentary Jeremiah 46:27

"But fear not thou, O Jacob my servant, neither be dismayed, O Israel: for, lo, I will save thee from afar, and thy seed from the land of their captivity; and Jacob shall return, and shall be quiet and at ease, and none shall make him afraid." — Jeremiah 46:27 (ASV)

But do not fear, O my servant Jacob; and be not dismayed, O Israel. The same things are said in (Jeremiah 30:10); (See Gill on Jeremiah 30:10); for, behold, I will save you from afar off, and your seed from the land your captivity.

Grotius thinks the Jews carried into Egypt by Pharaohnecho, along with Jehoahaz, are meant; but it does not appear that any were carried captive along with him, (2 Kings 23:33 2 Kings 23:34). Jarchi supposes these to be the righteous in Egypt, who were carried thither by Johanan against their will; but though they may be included, even that small remnant that should escape, (Jeremiah 44:28); yet the Jews in Babylon, and other provinces, are chiefly designed; and the words are intended to comfort them in their captivity, with a promise of their return, lest they should be discouraged, in hearing that the Egyptians should inhabit their own land again, and they not theirs:

and Jacob shall return, and be in rest, and at ease, and none shall make [him] afraid. This will have its full accomplishment hereafter in the latter day; when the Jews will be converted, and return to their own land, and never be disturbed more, as they have been, ever since their return from the Babylonian captivity. So Kimchi says this passage respects time to come.