Galatians 1:6-10: Apostolic Astonishment: Serving Christ by Safeguarding the Gospel of His Grace

Galatians 1:6-10: Summary:Paul showcases his love for these churches by reproving them as a father, his wayward children. Having begun by the sheer grace of God in Christ, these churches have begun to introduce merits (and demerits) into the equation of salvation, and Paul is astonished and agitated by this. He clarifies: to do this is not to continue in the Gospel. It's to turn from it to no Gospel at all. If you deny the sufficiency of Christ, you deny Christ, the all-sufficient Savior, Himself. There is one Gospel, but multiple distorters of that Gospel. It is the responsibility of the churches to know and safeguard this Gospel against any and everyone who would ever preach against it, Paul included. Again, he doesn't hold back. To preach a non-Gospel as Gospel is to draw down a curse from the apostle. It's to invite upon oneself the curse Jesus suffered for His people. If you say His work didn't suffice for it, you will find yourself under the brunt of it. At heart, faithfulness, as preachers and churches, is a matter of who we serve. If Man, we will bend to the errors that draw their praise; if Christ, we'll stand upon His Gospel, willing to be fools for Him.
Sermon Outline:
The reproofs in Paul's astonishment. (1:6-7)
a: In departing from the Gospel, you're deserting God. (1:6)
b: You're deleting the grace of Christ. (1:6)
c: You're denying your responsibility as churches. (1:7)

The rules of Gospel allegiance. (1:8-10)
a: Revelation over revelations. (1:8-9)
b: Message over messengers. (1:8-9)
c: God and Christ over Man. (1:10)