John Gill Commentary Ezekiel 2:9

"And when I looked, behold, a hand was put forth unto me; and, lo, a roll of a book was therein;" — Ezekiel 2:9 (ASV)

And when I looked, behold, an hand [was] sent unto me Not of an angel, but of Christ himself, in a visionary way; for this was not a real hand, but the likeness of one, as in (Ezekiel 8:3); and so the Targum here, ``and I saw, and behold, the likeness of a hand stretched out on the side to me.'' This symbol was to show that his prophecy, that he was sent to deliver, was from heaven and came from Christ; and that hand that delivered it to him would protect and defend him:

and, lo a roll of a book [was] therein ; held in it, and held forth by it, to the prophet. Books were frequently written on parchment or vellum, and rolled about a stick, in form of a cylinder; and hence they were called volumes or rolls, (Psalms 40:7). This roll was a symbol of the prophecy of this book.