Jeremiah 34:15-16

Although recently you had turned and done what is right in My sight, each man proclaiming release to his neighbor, and you had made a covenant before Me in the house which is called by My name. Yet you turned and profaned My name, and each man took back his male servant and each man his female servant whom you had set free according to their desire, and you brought them into subjection to be your male servants and female servants.” ’