Then I will make you my people, and I will be your God. You will know that I am the Lord your God, who brought you out from under the forced labor of the Egyptians.
Korah (son of Izhar), Dathan and Abiram (sons of Eliab), and On (son of Peleth) dared to challenge Moses. (Korah was a descendant of Kohath and Levi. Dathan, Abiram, and On were descendants of Reuben.)
Instead, these men were longing for a better country—a heavenly country. That is why God is not ashamed to be called their God. He has prepared a city for them.