Jeremiah 11:3-4

Say to them, Thus says the Lord, the God of Israel: Cursed is the man who does not heed the words of this covenant or solemn pledge Which I commanded your fathers at the time that I brought them out of the land of Egypt, from the iron furnace, saying, Listen to My voice and do according to all that I command you. So will you be My people, and I will be your God