A scroll is the written object named in these accounts and visions; its authority depends on the message and speaker the passage identifies. Jeremiah is instructed to record the Lord's words, and Baruch reads them for the people. Jehoiakim cuts and burns the scroll, but another scroll is written with the prior words and additional material. Ezekiel receives a scroll within his prophetic commission and is told to eat it before speaking to Israel.
Psalm 40 places the speaker's willingness to do God's will alongside what is written in the scroll. These uses concern hearing, rejecting or receiving a stated message. The noun itself cannot certify every religious manuscript, give a modern writer prophetic authority, or turn eating a vision's scroll into a practice that readers must imitate.