John Gill

And he came,.... He drew nigh to the throne of God, he engaged his heart to approach unto him, and came up even to his seat, which a mere creature, without a Mediator, cannot do: and took the book out of the right hand of him that sat upon the throne; See Gill on Rev 5:1; it being given unto him, as in Rev 1:1; and a commission and authority to open it, and make it manifest to others, and to accomplish the several events, in the several periods of time, it points unto.