Revelation 10:8–11 records that the voice John heard from heaven commanded him to take the scroll from the mighty angel’s hand. John obeys the instruction and is told by the mighty angel to eat the scroll. Upon eating the scroll, John finds it is sweet to the taste but bitter to his stomach. John receives word that he must prophesy again about many people and nations and languages and kings. The rest of the book of Revelation unfolds what lies ahead for the Gentiles and the people of Israel.
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“Revelation 10:11” Bibleref.com
11 They told me, “You must prophesy again over many peoples, nations, languages, and kings.