Jeremiah 34:15

34:15 Recently, however, you yourselves showed a change of heart and did what is pleasing to me. You granted your fellow countrymen their freedom and you made a covenant to that effect in my presence in the house that I have claimed for my own.

Jeremiah 34:18

34:18 I will punish those people who have violated their covenant with me. I will make them like the calf they cut in two and passed between its pieces. I will do so because they did not keep the terms of the covenant they made in my presence.