9 that every man should set free his male and female slave--a Hebrew man or woman--that no one should keep a Jewish brother in bondage. 10 Now when all the princes and all the people, who had entered into the covenant, heard that everyone should set free his male and female slaves, that no one should keep them in bondage anymore, they obeyed and let them go. 11 But afterward they changed their minds and made the male and female slaves return, whom they had set free, and brought them into subjection as male and female slaves.

Matthew Henry's Commentary on Jeremiah 34:9-11

Commentary on Jeremiah 34:8-22

(Read Jeremiah 34:8-22)

A Jew should not be held in servitude above seven years. This law they and their fathers had broken. And when there was some hope that the siege was raised, they forced the servants they had released into their services again. Those who think to cheat God by dissembled repentance and partial reformation, put the greatest cheat upon their own souls. This shows that liberty to sin, is really only liberty to have the sorest judgments. It is just with God to disappoint expectations of mercy, when we disappoint the expectations of duty. And when reformation springs only from terror, it is seldom lasting. Solemn vows thus entered into, profane the ordinances of God; and the most forward to bind themselves by appeals to God, are commonly most ready to break them. Let us look to our hearts, that our repentance may be real, and take care that the law of God regulates our conduct.