Paul used the word gospel twice in this verse but both had very different meanings. The first meant the Good News of the Gospel of Jesus Christ…that by way of His death, burial, and resurrection, we might have eternal life. The second gospel could not have been farther from that truth. It was distinctly different and deceptive and was leading the Church of Galatia astray. In II Corinthians 11:13-15, Paul called these teachers, “false apostles and servants of Satan masquerading as apostles of Christ.” They came proclaiming a ‘new and improved’ Gospel Message that was categorically incorrect and flawed, but the people were accepting it. Paul here was charging them to be vigilant and discerning…for if the message did not proclaim justification by grace alone, through faith alone, in Christ alone…it was a false gospel.