Jeremiah 40:12

12 soothly all [the] Jews turned again from all [the] places, to which they had fled; and they came into the land of Judah, to Gedaliah, in Mizpah, and gathered wine and ripe corn full much. (truly all the Jews returned from all the places, to which they had fled; and they came to the land of Judah, to Gedaliah, in Mizpah, and gathered a great deal of wine and ripe corn.)

Jeremiah 40:12 Meaning and Commentary

Jeremiah 40:12

Even all the Jews returned from all places whither they were
driven
Through fear of the Chaldean army; they came all of them from the several countries before mentioned; so that here was like to be a happy settlement and a flourishing commonwealth again; here being princes and generals, soldiers and common people, in large numbers, that were returned and coalesced under the government of Gedaliah: and came to the land of Judah, to Gedaliah, unto Mizpah;
they came out of the several countries where they had been for some time, and entered the land of Judah; but did not take up their abode anywhere, till they had presented themselves to the governor, and put themselves under his protection; promising, no doubt, to regard him as such, and to be tributary to the Chaldeans; being assured by him, as the generals and their forces before, that all would be well with them, giving them free liberty to settle in the cities and villages to which they belonged; and accordingly they set out from Mizpah, and went to their respective habitations they had abandoned: and gathered wine and summer fruits very much;
(See Gill on Jeremiah 40:10); the people of the land being carried captive; and the Chaldean army not having ravaged these parts, or however had left an abundance of fruits, which these people, at their return, found and gathered.

Jeremiah 40:12 In-Context

10 Lo! I dwell in Mizpah, for to answer to the commandment of [the] Chaldees, that be sent to us; forsooth gather ye vintage, and ripe corn, and oil, and keep ye in your vessels, and dwell ye in your cities which ye hold. (Lo! I must stay in Mizpah, in order to answer to the commandment of the Chaldeans, who be sent to us; but ye can gather the vintage, and the ripe corn, and the oil, and keep ye them in your vessels, and live ye in your cities which ye have taken, or occupied.)

11 But also all the Jews, that were in Moab, and in the hosts of Ammon, and in Idumea, and in all the countries, when it is heard, that the king of Babylon had given residues, either remnants, in Judah, and that he had made sovereign on them Gedaliah, the son of Ahikam, son of Shaphan, (And all the Jews, who were in Moab, and in the land of Ammon, and in Edom, and in all the other countries, when they had heard that the king of Babylon had left a remnant in Judah, and that he had made Gedaliah, the son of Ahikam, the son of Shaphan, their ruler,)

12 soothly all [the] Jews turned again from all [the] places, to which they had fled; and they came into the land of Judah, to Gedaliah, in Mizpah, and gathered wine and ripe corn full much. (truly all the Jews returned from all the places, to which they had fled; and they came to the land of Judah, to Gedaliah, in Mizpah, and gathered a great deal of wine and ripe corn.)

13 Forsooth Johanan, the son of Kareah, and all the princes of the host, that were scattered in the countries, came to Gedaliah in Mizpah, (And Johanan, the son of Kareah, and all the leaders, or all the officers, of the army, who were scattered in the countryside, came to Gedaliah in Mizpah,)

14 and said to him, Know thou, that Baalis, king of the sons of Ammon, hath sent Ishmael, the son of Nethaniah, to smite thy life. And Gedaliah, the son of Ahikam, believed not to them. (and said to him, Know thou, that Baalis, the king of the Ammonites, hath sent Ishmael, the son of Nethaniah, to strike down thy life. But Gedaliah, the son of Ahikam, did not believe them.)