Jeremiah 30:22 Midrash

וִהְיִ֥יתֶם לִ֖י לְעָ֑ם וְאָ֣נֹכִ֔י אֶהְיֶ֥ה לָכֶ֖ם לֵאלֹהִֽים׃ (ס)

And ye shall be My people, and I will be your God.

Read midrashic interpretation of Jeremiah 30:22: and classical rabbinic exegesis.