Jeremiah 34:9

34:9 Everyone was supposed to free their male and female Hebrew slaves. No one was supposed to keep a fellow Judean enslaved. ¹ 

Jeremiah 34:14

34:14 “Every seven years each of you must free any fellow Hebrews who have sold themselves to you. After they have served you for six years, you shall set them free.” ²  But your ancestors did not obey me or pay any attention to me.

[34:9]  ¹ tn Heb “after King Zedekiah made a covenant…to proclaim liberty to them [the slaves mentioned in the next verse] so that each would send away free his male slave and his female slave, the Hebrew man and the Hebrew woman, so that a man would not hold them in bondage, namely a Judean, his brother [this latter phrase is explicative of “them” because it repeats the preposition in front of “them”].” The complex Hebrew syntax has been broken down into shorter English sentences but an attempt has been made to retain the proper subordinations.

[34:14]  ² sn Compare Deut 15:12-18 for the complete statement of this law. Here only the first part of it is cited.