John Gill Commentary Zechariah 4:13

"And he answered me and said, Knowest thou not what these are? And I said, No, my lord." — Zechariah 4:13 (ASV)

And he answered me, and said
That is, the angel answered to the prophet's questions: Do you not know what these are? And I said, No, my lord ;
(See Gill on Zechariah 4:5).