Jeremiah 46:27
But fear not thou, O my servant Jacob, and be not dismayed, O Israel: for, behold, I will save thee from afar off, and thy seed from the land of their captivity; and Jacob shall return, and be in rest and at ease, and none shall make him afraid.
Jeremiah 46:27 stands in the section of Jeremiah containing prophecies against foreign nations, especially Babylon, as part of the prophecy concerning Egypt and its fall. It belongs to Jeremiah's closing chapters covering his personal experiences and his going into Egypt, standing last in chronological order after chapters 40 to 45 and chapter 47. The surrounding prophecy concerning Egypt describes its revolutions and state and foretells its invasion and subduing by Nebuchadnezzar king of Babylon, the mighty conqueror, fulfilled when Egypt was conquered and spoiled and fell into the hands of strangers and became the basest of the kingdoms.
The verse shows that God Himself will gather Israel, not that Israel will gather themselves and rebuild Jerusalem. God tells His servant Jacob and Israel not to fear or be dismayed, for He will save them from afar off and their seed from the land of captivity, and Jacob shall return and be in rest and at ease with none making him afraid, a promise of rescue from captivity, return, and security and of deliverance and safety for Jacob. The next verse adds that God is with Jacob, that He will make a full end of all the nations whither He drove them but will not make a full end of Jacob, but will correct him in measure and will not leave him wholly unpunished.
The verse looks through the restoration from Babylon to the more glorious restoration under Christ Jesus our Lord. In that restoration the faithful remnant of literal Israel serves as a type of Israel under the new covenant. As an assurance of God's kindness and everlasting love promising deliverance and safety for Jacob, the verse is applicable to the present day.