Jeremiah 12:15

15But after I have uprooted the people of those nations, I will relent
For the use of the verb “turn” (שׁוּב, shuv) in this sense, see BDB s.v. שׁוּב Qal.6.g and compare the usage in Pss 90:13; 6:4; Joel 2:14. It does not simply mean “again” as several of the English versions render it.
and have pity on them. I will restore the people of each of those nations to their own lands
The Lord is sovereign over the nations and has allotted each of them their lands. See Deut 2:5 (Edom), Deut 2:9 (Moab), Deut 2:19 (Ammon). He promised to restore not only his own people Israel to their land (Jer 32:37) but also Moab (Jer 48:47) and Ammon (Jer 49:6).
and to their own country.
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