Yirmeyahu (Jer) 31:31-32

It will not be like the covenant I made with their fathers on the day I took them by their hand and brought them out of the land of Egypt; because they, for their part, violated my covenant, even though I, for my part, was a husband to them,” says ADONAI. “For this is the covenant I will make with the house of Isra’el after those days,” says ADONAI: “I will put my Torah within them and write it on their hearts; I will be their God, and they will be my people.