תָּמֹ֣ךְ אֲ֭שֻׁרַי בְּמַעְגְּלוֹתֶ֑יךָ בַּל־נָמ֥וֹטּוּ פְעָמָֽי׃
מײַנע טריט האָבן זיך געהאַלטן אָן דײַנע שטעגן, ניט אױסגעגליטשט האָבן זיך מײַנע פֿיס.
Rashi
To support my feet From then on, for every deed of man that I did improperly, may Your eyes see the upright deeds, but my judgment shall go forth from before you.
Radak
Maintain: – המוך is an infinitive in the place of an imperative, as “Keep (שמור) the sabbath day” (Deut. 5:12); “Go (הלוך) and call” (Jer. 2:2). And he says:
Radak
my treadings in Thy paths: – meaning, my treadings as they go in Thy paths, and in Thy way do Thou maintain.