Rashi on TanakhPsalms 101

I shall sing of kindness and judgment when You bestow kindness upon me, I will praise you [with the blessing:] “Blessed be He Who is good and does good,” and when You perform judgment upon me, I will sing, “Blessed be the true Judge.” In either case, to You, O Lord, I shall sing.

I shall concern myself I shall direct my thoughts to the way of integrity.

When will it come to me The straight path, to walk upon it, and I shall walk with the integrity of my heart even within my house, in private as well as in public.

wayward Heb. סטים, an expression of (Num. 5:12): “whose wife strays (תשטה) from the right path,” to turn away from the road, destolemant in Old French, to swerve.

I know no evil I love no [evil] (Another explanation: [Shem Ephraim]) I recognize no evil thing.

I cannot tolerate him that he should be my friend, lest I learn from his deeds.

Betimes I cut down Every day, I cut down the wicked of Israel little by little, those who are condemned to death.