Zechariah 5:2

He afterwards adds, that he was asked by the angel what he saw. He might indeed have said, that a roll flying in the air appeared to him, but he did not as yet understand what it meant; hence the angel performed the office of an interpreter. But he says, that the roll was twenty cubits long, and ten broad. The Rabbis think that the figure of the court of the temple is here represented, for the length of the court was twenty cubits and its breadth was ten; and hence they suppose, that the roll had come forth from the temple, that there might be fuller reason to believe that God had sent forth the roll. And this allusion, though not sufficiently grounded, is yet more probable than the allegory of the puerile Jerome, who thinks that this ought to be applied to Christ, because he began to preach the gospel in his thirtieth year. Thus he meant to apply this number to the age of Christ, when he commenced his office as a teacher. But this is extreme trifling. I do not feel anxious to know why the length or the breadth is mentioned; for it seems not to be much connected with the main subject. But if it be proper to follow a probable conjecture, what I have already referred to is more admissible — that the length and breadth of the roll are stated, that the Jews might fully understand that nothing was set before them but what God himself sanctioned, as they clearly perceived a figure of the court of the temple.