Explanatory Notes on the Whole Bible, by John Wesley, [1754-65], at sacred-texts.com
jer 34:5Ah Lord - The Jews in their chronology, give us the form of the lamentation thus. Alas! Zedekiah is dead, who drank the dregs of all ages: that is, who was punished for the sins of all former ages.
jer 34:17Behold - You shall perish by the sword, famine and pestilence, and those of you who escape them, shall be slaves, in many nations.
jer 34:18Cut the calf - It seems these Jews in their making of the solemn covenant with God about releasing their servants used this rite; they caused a calf, or heifer to be cut in pieces, and the parts to be laid in the temple, right over - against one another; then they recited this covenant, and passed between the parts of the heifer so cut; silently agreeing that God should cut them in pieces like that beast if they did not make their words good.
jer 34:22Behold - I will put into their hearts to return.