I will take you to be my own people. I will be your God. I throw off the load the Egyptians have put on your shoulders. Then you will know that I am the Lord your God.
Korah was the son of Izhar, the son of Kohath. Kohath was the son of Levi. Korah and certain men from the tribe of Reuben turned against Moses. The men from Reuben were Dathan, Abiram and On. Dathan and Abiram were the sons of Eliab. On was the son of Peleth.
Instead, they longed for a better country. They wanted a heavenly one. So God is pleased when they call him their God. In fact, he has prepared a city for them.