Gospel means good news for all of us. Then to the believers in the Lord, what’s the gospel? Understanding this is helpful in our gaining the eternal gospel.
“Another gospel” Paul said was not the everlasting gospel. Accepting the gospel of the last days is not betraying God.
The Lord Jesus’ kingdom gospel is different from the everlasting gospel in the last days mentioned in Revelation. Each gospel of God represents each stage of His salvation for mankind. They are different in contents.