Revelation 10:9-10

9And I went to the angel, saying to him to give me the little book. And he says to me, Take and eat it up: and it shall make thy belly bitter, but in thy mouth it shall be sweet as honey.

10And I took the little book out of the hand of the angel, and ate it up; and it was in my mouth as honey, sweet; and when I had eaten it my belly was made bitter.