Matthew Poole and continuators on Jeremiah 7:6

6 If ye oppress not the stranger, the fatherless and the widow, and shed not innocent blood in this place, neither walk after other Gods to your hurt.

Here they are cautioned against three sins, that this people were generally addicted to; oppression, blood and Idolatry and he instanceth in the worst of oppressions, viz. of such as God hath more especially taken into his immediate protection, because these are most void of help, and most obnoxious to injuries. The stranger, Exod. 22, 21. the fatherless and widow, and ver. 22, 23.24. see them all three together, Deut. 10.18. and 27.19. See on Isa. 10.1, 2. and where God speaks of right administring of Justice, he usually makes mention of these three to prove the integrity and impartiality of Justice; and though this may more properly respect the Princes and great Ones, yet I conceive here the Prophet doth not so restrain it.

Either by Murder, or unrighteous Sentence, being one of those sins in special mentioned, for which God expresseth his high displeasure, and will send the Chaldeans upon them, 2 King. 24.4.

Either in this City in special, or the whole land in general; see ver. 3. and there he would shew what a foolish thing it is that they should boast of their security in this place, and yet shed blood, which pollutes every place, Num. 35.31. &c.

Abstain from your Idolatrous courses, and depart not from my pure and uncorrupted Worship, unto your superstitious and Hypocritical Service, and he adds to your hurt or your own hurt; to shew that they will be the only sufferers by it, not God, ver. 19. God is neither benefited or damaged by any thing that we can do, Iob 35.6, 7, 8.