John 1:12

But to all who did receive him and believe in him he gave the right to become children of God,

Romans 9:25-26

Just as he says in Hosea, "I will call a people that was not mine, my people, And her who was not beloved, my beloved,

1 Peter 2:10

you who were once "no people" but are now "God's people"; once "unpitied" but now "pitied indeed."

Treasury of Scripture Knowledge

Summary

For thou hast confirmed to thyself thy people Israel to be a people unto thee for ever: and thou, LORD, art become their God.

Bible References

Art become

John 1:12
But to all who did receive him and believe in him he gave the right to become children of God,
Romans 9:25
Just as he says in Hosea, "I will call a people that was not mine, my people, And her who was not beloved, my beloved,
1 Peter 2:10
you who were once "no people" but are now "God's people"; once "unpitied" but now "pitied indeed."