³ tn The imperfect tense here receives the classification of obligatory imperfect. The verb שָׁמַע (shamaʿ) followed by “in the voice of” is idiomatic; rather than referring to simple audition—“that I should hear his voice”—it conveys the thought of listening that issues in action—“that I should obey him.”

³ tn The final עַד־כֹּה (ʿad 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.