Is Revelation 14 the gospel that Paul preached? The gospel of how Jesus died for our sins, was buried and rose again the third day?
“The everlasting Gospel" presents God as the Creator, not the Savior, and warns men that judgment is coming. It calls men to fear God and give Him the glory, not the Beast and Satan. This is God's final call to a world deluded by Satan.
Revelation 14
6 And I saw another angel fly in the midst of heaven, having the everlasting gospel to preach unto them that dwell on the earth, and to every nation, and kindred, and tongue, and people,
7 Saying with a loud voice, Fear God, and give glory to him; for the hour of his judgment is come: and worship him that made heaven, and earth, and the sea, and the fountains of waters.