Getting the Everlasting Gospel right (Re 14:6) — understanding it, accepting it, internalizing it and living it out (1Co 15:1-2) — is how we lay hold on eternal life. (1Ti 6:19)
Yet Satan relentlessly and cleverly corrupts and distorts the Gospel to hide the truth from us; his counterfeits abound and they’re appealing. (2Co 11:13-15) So, we have a sobering challenge before us, the ultimate life-and-death struggle – the fight of all fights: to lay hold on the true Gospel for ourselves. (1Ti 6:12) Little if anything is more important than this, and very few of us will get it right. (Mt 7:13-14)
The Apostle Paul claims he was taught the Gospel directly and personally by Jesus Christ Himself (Ga 1:11-12), and then proclaims an eternal curse upon anyone, including himself or any other apostle, or even an angel from Heaven, preaching a different gospel than what he had already preached. (Ga 1:8) We may derive several practical truths from his remarkable claim.
By pronouncing an eternal curse upon anyone modifying the Gospel, Paul implies the Gospel message was already sufficiently clear to be correctly and fully understood by anyone presenting the Gospel; Paul effectively expected all those in the Galatian churches to understand his prior teaching for themselves and compare all Gospel proclamations with that particular expression of the Gospel.
This implies that the true Gospel message can be understood by anyone carefully considering the scriptures, particularly the writings of Paul, and searching out the truth for themselves. (2Ti 3:15) Therefore, any claim that the true gospel was merely hidden “in seed form” within Paul’s message, only to be revealed later through subsequent developments, may be confidently rejected.
Paul’s sense of urgency in presenting the Gospel correctly, in its pure form, in the midst of counterfeit gospels which were evidently already common (2Co 11:4), implies it is extremely important that we each strive to fully understand what Christ taught Paul; we can easily be misled if we’re careless. (2Pe 3:16-17) Getting the Gospel wrong, either in our understanding or personal ministry, may be eternally and incomprehensively devastating.
Paul’s determination to openly challenge those who had been deceived by a false gospel, even those who had been taught by Paul himself, tells us Satan is actively at work to deceive and corrupt the Gospel and that he is often very successful. Paul was on the lookout for gospel deceptions and anticipated them because he understood our enemy. (2Co 2:11) We should soberly consider Paul’s admonitions and carefully verify that our personal understanding and application of the Gospel aligns with everything in the Word of God.
By including angels from Heaven in his list of potential deceivers, and even including himself, Paul is warning us to anticipate corruption from the very highest levels of spiritual authority. We should expect any religious organization or individual claiming authority to interpret scripture for others to be a magnet for satanic infiltration and deception. Paul is effectively saying we should ultimately trust no other Gospel claims than what we can verify for ourselves in the source material, the Word of God, which He has already given us.
Paul rejected the right of any being in Heaven or on Earth to alter or adjust the Gospel itself in any way. This implies there never has been and never will be any revelation from God that modifies or amends the original Gospel message in any manner whatsoever. The everlasting Gospel has never changed since the beginning of time; it will remain constant forever, just like Jesus Christ. (He 13:8)
Finally, Paul’s lack of reference to any external authority as a final arbiter in any dispute over gospel claims, such as the other apostles, a counsel of bishops, an angel from Heaven, or even Paul himself, implies his audience already had a reliable, faithful, unchanging standard by which to evaluate any subsequent preaching of the Gospel and that they were each individually and personally responsible for doing so. Paul, in writing to the local assemblies of Galatia (Ga 1:2), comprising all the saints and not merely bishops, could easily have set himself up as such an arbiter, or pointed believers to church leaders for approval, but he did not. Rather, he admonished them all for having allowed themselves to be deceived by a false gospel and removed from God as a result. (Ga 1:6)
Claiming otherwise, that someone else could be the final, authoritative arbiter in interpreting Paul’s Gospel for anyone but themselves, is effectively indistinguishable from giving a sinner authority to misinterpret it and preach a different gospel. This would remove the responsibility and accountability from the individual believer for believing the true Gospel, which neither Paul nor God ever does. Thus, Paul’s claim implies each believer is individually responsible to evaluate any presentation of the Gospel for themselves, based on their personal understanding of that eternal standard which they already have, interpreting it for themselves, and rejecting any gospel presentation which they find to be inconsistent with it. (This is the essence of Sola Scriptura.)
God’s prescription for addressing Satan’s gospel counterfeits is therefore not self-appointed spiritual authority telling others what to believe, but the humble, earnest searching of scripture by each individual believer (Ac 17:11), seeking a common, mutual, personal understanding of the Gospel (Php 2:2), based on an unchanging, written, supernaturally preserved standard (Ro 16:26): holy scripture. (2Ti 3:15)

