73 Heb “the steps of a man”; but “man” is the noun גֶּבֶר (gever, in pause), indicating an important, powerful person. 149–50 suggests it is used of men in their role of defending women and children; if that can be validated, then a translation of “man” would be appropriate here. But the line seems to have a wider, more general application. The “steps” represent (by implied comparison) the course of life (cf. “the road we travel”).
74 Heb “from the Lord”; “ordered by the Lord”; “directed by the Lord.” To say that one’s steps are ordained by the Lord means that one’s course of actions, one’s whole life, is divinely prepared and sovereignly superintended (e.g., Gen 50:26; Prov 3:6). Ironically, man is not actually in control of his own steps.
75 The verse uses an independent nominative absolute to point up the contrast between the mortal and the immortal: “and man, how can he understand his way?” The verb in the sentence would then be classified as a potential imperfect; and the whole question rhetorical. It is affirming that humans cannot understand very much at all about their lives.
76 Heb “his way.” The referent of the third masculine singular pronoun is unclear, so the word “own” was supplied in the translation to clarify that the referent is the human individual, not the Lord.