Zechariah 3:5

And I said The speaker might be the Angel of the Lord, reciting further the commands which he had given. But it is better to suppose that Zechariah, looking on with intense interest, gives vent to his feelings, in the request that the now comely attire of the High Priest should not be left incomplete.

mitre The word is not the same (though from the same root) as that used in Exodus 28:4; Exodus 28:36-38; but there is no doubt that the same thing is intended.

stood by i.e. remained in the same position that he had occupied before, to superintend and sanction the proceedings.