Galatians 1:7

but there be some that trouble … Christ Only so far can it be called another gospel, as it is a perversion of the Gospel of Christ. It does not profess to be a distinct revelation; it claims to be -the Gospel", Just as we might speak of spurious coin, though it was not issued from the mint.

some that trouble you The Judaizing teachers (ch. Galatians 5:10) who were drawing them away from their allegiance, and raising factions among them.

and would pervert -Would" is not a mere auxiliary. Their desire and determination are to -reverse, to change to the opposite, and so stronger than to pervert or distort" (Lightfoot). St Paul regarded the new doctrine as subversive of the truth and utterly incompatible with the Gospel which he preached.

the gospel of Christ Christ is at once its Author, its theme, its substance. Elsewhere it is termed the -Gospel of God" (Romans 1:1), and the -Gospel of His Son" (Romans 1:9).