Kommentar zu Tehillim 17:5

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.

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:

my treadings in Thy paths: – meaning, my treadings as they go in Thy paths, and in Thy way do Thou maintain.

(so that) my footsteps have not slipped: – There is some disagreement as to the reading of the word נמטו (slipped). There are some MSS. which daghesh the teth, and if this be so it will be derived from a double ayin verb; there are MSS., however, (where the word appears) without the daghesh, and then it will be derived from a verb 'ayin waw.