סָמ֣וּךְ לִ֭בּוֹ לֹ֣א יִירָ֑א עַ֖ד אֲשֶׁר־יִרְאֶ֣ה בְצָרָֽיו׃
זיכער איז זײַן האַרץ, ער האָט ניט קײן מורא, ביז ער זעט זיך אָן אױף זײַנע פֿײַנט.
Ibn Ezra
סס The worm. It is hap. leg. But my righteousness shall be for ever. Comp. And His righteousness endureth for ever (Ps. 112:8).8I. E. comparing this phrase with a similar one (Ps. 112:3) explains the verb היה by the verb עמד, which more exclusively expresses duration, while היה has also the meaning to become, signifying a single act.