'My People' in the Bible

I have heard the reproach of Moab, and the insults of the children of Ammon, with which they have reproached my people, and magnified themselves against their border.

Therefore as I live, says Yahweh of Armies, the God of Israel, surely Moab will be as Sodom, and the children of Ammon as Gomorrah, a possession of nettles, and salt pits, and a perpetual desolation. The remnant of my people will plunder them, and the survivors of my nation will inherit them.