Glorious things are said of you,
    city of God:^[a]
4 “I will record Rahab^[b] and Babylon
    among those who acknowledge me—
Philistia too, and Tyre, along with Cush^[c]—
    and will say, ‘This one was born in Zion.’”^[d]
5 Indeed, of Zion it will be said,
    “This one and that one were born in her,
    and the Most High himself will establish her.”
⁶ The Lord will write in the register of the peoples:
    “This one was born in Zion.” Psalm 87:3-6

What does it mean “to be written in the registers of the peoples”?