John Gill Commentary Zechariah 4:5

"Then the angel that talked with me answered and said unto me, Knowest thou not what these are? And I said, No, my lord." — Zechariah 4:5 (ASV)

Then the angel that talked with me answered and said to
me
Either to upbraid him with his ignorance and stupidity; or rather to quicken his attention, and that of others, to the interpretation of it he was about to give him: Do you not know what these are ?
are you ignorant of the design of them? or do you not know what is meant by them? and I said, No, my lord ;
he made an ingenuous confession of his ignorance, joined with great respect to, and veneration of, the angel that conversed with him.