John had heard the mighty angel swear with uplifted hand (Revelation 10:5–7). But now the unidentified speaker of Revelation 10:4 speaks up again. The fact that he speaks from heaven makes it clear that John is most certainly obligated to listen to him and obey his instructions.
8 Then the voice that I had heard from heaven spoke to me again, saying, “Go, take the scroll that is open in the hand of the angel who is standing on the sea and on the land.”