Revelation 10: 8 - 11
8 Then the voice which I had heard from heaven spoke to me again, saying, "Go, take the scroll which is open in the hand of the angel who is standing on the sea and on the land."
9 So I went to the angel and told him to give me the little scroll; and he said to me, "Take it and eat; it will be bitter to your stomach, but sweet as honey in your mouth."
10 And I took the little scroll from the hand of the angel and ate it; it was sweet as honey in my mouth, but when I had eaten it my stomach was made bitter.
11 And I was told, "You must again prophesy about many peoples and nations and tongues and kings."

EWTN