1 Kings 8:51

8:51 After all, they are your people and your special possession whom you brought out of Egypt, from the middle of the iron-smelting furnace.

Jeremiah 11:4

11:4 Those are the terms that I charged your ancestors to keep when I brought them out of Egypt, that place which was like an iron-smelting furnace. I said at that time, “Obey me and carry out the terms of the agreement exactly as I commanded you. If you do, you will be my people and I will be your God.