Eat it up — The like was commanded to Ezekiel. This was an emblem of thoroughly considering and digesting it. And it will make thy belly bitter, but it will be sweet as honey in thy mouth — The sweetness betokens the many good things which follow, Revelation 11:1, Revelation 11:15, &c.; the bitterness, the evils which succeed under the third woe.
Related Commentaries of Revelation 10:9
Revelation 10:9
9 And I went unto the angel, and said unto him, Give me the little book. And he said unto me, Take it, and eat it up; and it shall make thy belly bitter, but it shall be in thy mouth sweet as honey.