Which I commanded your fathers in the day [that] I brought them forth out of the land of Egypt, from the iron furnace, saying, Obey my voice, and do them, according to all which I command you: so shall ye be my people, and I will be your God:
Ver. 4. From the iron furnace.] Where iron is melted, and a fierce fire required.
Obey my voice.] See Jeremiah 7:23 .