Rashi on Psalms
From blows and from robbery Heb. מתוך ומחמס, from blows and from robbery. I found [the following]: מִתּוֹךְ is an expression of “his innermost midst (תּוֹךְ),” men of plots, who plot iniquity, as (Prov. 29:13): “a man of deep thoughts (תככים).”
Rashi on Psalms
he will redeem their soul through the justice and righteousness that he will perform for them.