[7:16] 1 tn The form לֵאמֹר (le’mor) is the Qal infinitive construct with the lamed (ל) preposition. It is used so often epexegetically that it has achieved idiomatic status – “saying” (if translated at all). But here it would make better sense to take it as a purpose infinitive. God sent him to say these words.
[7:16] 2 tn The imperfect tense with the vav (וְיַעַבְדֻנִי, vÿya’avduni) following the imperative is in volitive sequence, showing the purpose – “that they may serve me.” The word “serve” (עָבַד, ’avad) is a general term to include religious observance and obedience.
[7:16] 3 tn The final עַד־כֹּה (’ad-koh, “until now”) narrows the use of the perfect tense to the present perfect: “you have not listened.” That verb, however, involves more than than mere audition. It has the idea of responding to, hearkening, and in some places obeying; here “you have not complied” might catch the point of what Moses is saying, while “listen” helps to maintain the connection with other uses of the verb.