The Gospel is God's judgement
'Then I saw another angel flying in the midst of heaven, having the everlasting gospel to preach to those who dwell on the earth—to every nation, tribe, tongue, and people—saying with a loud voice, “Fear God and give glory to Him, for the hour of His judgment has come; and worship Him who made heaven and earth, the sea and springs of water.”' - The Revelation of Jesus Christ, 14:6-7 ... I would commend to you Rev. Travis Berg's Reformation Day sermon (2023) for your edification.