'My People' in the Bible

My ears have been open to the bitter words of Moab and the words of shame of the children of Ammon, which they have said against my people, lifting themselves up against the limit of their land.

For this cause, by my life, says the Lord of armies, the God of Israel, truly Moab will become like Sodom and the children of Ammon like Gomorrah, given up to waste plants and salt pools and unpeopled for ever: the rest of my people will take their property, the overflow of my nation will take their heritage.