J. Vernon McGee Commentary Gal 1:6:
Now the subject of Paul’s letter to the Galatian
believers concerns the interpretation of the facts of the gospel. The
Judaizers had followed Paul into the Galatian country. They did not
challenge the facts of the gospel. After all, five hundred people at once
saw the Lord Jesus after His resurrection. When you have that many people
around as witnesses, you don’t run around denying the facts of the gospel.
The heresy they were promoting concerned the interpretation of those facts.
They were very sly and subtle and said something like this, “Did Brother
Paul come here among you?” The folk would say, “Yes, he came and preached
the gospel and we accepted it. We are converted. We know Christ as our
Savior, and we are in the body of believers.” The Judaizers would respond,
“Oh, that’s wonderful. Brother Paul is accurate as far as he goes, but he
doesn’t go far enough. Did he tell you that you should keep the Mosaic Law?
Oh, he didn’t? Well, he should have told you that. Yes, you are to trust
Christ, but you must also follow the Mosaic Law or you won’t be saved.”
This is one of the oldest heresies known, and it is still
with us today. It is adding something to the gospel of grace; it is
doing something rather
than simply believing something. It is faith plus something rather than
faith plus nothing. Every cult and “ism” has something for you to
do in order to be saved.
It is interesting that Paul said to the Philippian
jailer, “… Believe on the Lord Jesus Christ, and thou shalt be saved …”
(Acts 16:31). Simon Peter said to the Sanhedrin, “Neither is there salvation
in any other; for there is none other name under heaven given among men,
whereby we must be saved” (Acts 4:12). Christ told the apostles to preach
the gospel of salvation by grace. They were not to do anything to gain their
salvation, but they were to trust what Christ already had done for them. The
gospel shuts out all works.
Now Paul is writing to the Galatian believers and saying,
“I marvel that ye are so soon removed from him that called you into the
grace of Christ unto another gospel”—
McGee, J. Vernon: Thru the Bible
Commentary. electronic ed. Nashville : Thomas Nelson, 1997,
c1981, S. 5:153