'My People' in the Bible

Many nations shall join themselves to the Lord in that day and shall be My people. And I will dwell in your midst, and you shall know (recognize, understand fully) that the Lord of hosts has sent Me to you.

Thus says the Lord of hosts, ‘Behold, I am going to save My people from the east country and from the west,

and I will bring them home and they will live in the midst of Jerusalem; and they shall be My people, and I will be their God in truth (faithfulness) and in righteousness.’

“And I will bring the third part through the fire,Refine them as silver is refined,And test them as gold is tested.They will call on My name,And I will listen and answer them;I will say, ‘They are My people,’And they will say, ‘The Lord is my God.’”