Albert Barnes Commentary Jeremiah 7:5-7

"For if ye thoroughly amend your ways and your doings; if ye thoroughly execute justice between a man and his neighbor; if ye oppress not the sojourner, the fatherless, and the widow, and shed not innocent blood in this place, neither walk after other gods to your own hurt: then will I cause you to dwell in this place, in the land that I gave to your fathers, from of old even for evermore." — Jeremiah 7:5-7 (ASV)

A summary of the conditions indispensable on humanity's part, before they can plead the terms of the covenant in their favor.

(Jeremiah 7:6) In this place—that is, in Jerusalem. The prophet refers to innocent blood shed there judicially. Jehoiakim had already been guilty of one such judicial murder (Jeremiah 26:23).

(Jeremiah 7:7) Why then do the Jews not still possess a land that was thus eternally given to them? Because God never bestows anything unconditionally. The land was bestowed upon them by virtue of a covenant (Genesis 17:7); the Jews had broken the conditions of this covenant (Jeremiah 7:5–6), and the gift reverted to the original donor.