Ezekiel and John eating the book
In Ezekiel 3:1-3; and Revelation 10:10, eating the book or scroll signifies the doctrine of truth and the Word, exploring how the divine truth is received, perceived, and appropriated by people in the church. (Apocalypse Revealed 619[3])
Revelation 10:10
10
I took the little book out of the angel's hand, and ate it up. It was as sweet as honey in my mouth. When I had eaten it, my stomach was made bitter.