Jamieson, Fausset and Brown on Jeremiah 34:17

17. not ... proclaiming liberty--Though the Jews had ostensibly emancipated their bond-servants, they virtually did not do so by revoking the liberty which they had granted. God looks not to outward appearances, but to the sincere intention.

I proclaim a liberty--retribution answering to the offense (Mt 7:2; 18:32, 33; Ga 6:7; Jas 2:13). The Jews who would not give liberty to their brethren shall themselves receive "a liberty" calamitous to them. God will manumit them from His happy and safe service (Psa 121:3), which is real "liberty" (Psa 119:45; Joh 8:36; 2Co 3:17), only to pass under the terrible bondage of other taskmasters, the "sword," &c.

to be removed--The Hebrew expresses agitation (see on Jr 15:4). Compare De 28:25, 48, 64, 65, as to the restless agitation of the Jews in their ceaseless removals from place to place in their dispersion.