Numbers 11:29 New English Translation

²⁹Moses said to him, “Are you jealous for me?^[a] I wish that^[b] all the Lord’s people were prophets, that the Lord would put his Spirit on them!”

Numbers 11:29 tn The Piel participle מְקַנֵּא (m^eqanneʾ) serves as a verb here in this interrogative sentence. The word means “to be jealous; to be envious.” That can be in a good sense, such as with the translation “zeal,” or it can be in a negative sense as here. Joshua’s apparent “zeal” is questioned by Moses—was he zealous/envious for Moses sake, or for some other reason?
Numbers 11:29 tn The optative is expressed by the interrogative clause in Hebrew, “who will give….” Moses expresses here the wish that the whole nation would have that portion of the Spirit. The new covenant, of course, would turn Moses’ wish into a certainty.

New English Translation (NET)