Galatians 1:6-10 I am astonished that you are so quickly deserting him who called you in the grace of Christ and are turning to a different gospel— not that there is another one, but there are some who trouble you and want to distort the gospel of Christ. But even if we or an angel from heaven should preach to you a gospel contrary to the one we preached to you, let him be accursed. As we have said before, so now I say again: If anyone is preaching to you a gospel contrary to the one you received, let him be accursed. For am I now seeking the approval of man, or of God? Or am I trying to please man? If I were still trying to please man, I would not be a servant of Christ.
One of my very favorite books in all the Bible is Paul’s epistle to the Galatians. This letter addresses a problem seen in many churches today of adding man-made requirements to being a Christian and beautifully reveals how free Christianity truly is from external salvific requirements. This is another good book to learn what separates true Christianity from many of the different cults masquerading as a superior Christianity when, in fact, they are not Christian at all. As John MacArthur points out, Galatians is not a detached theological treatise but a deeply personal letter written from the grieving heart of a godly man for his spiritual children, whose faith and living were being undermined by false teachers.1
The first 12 verses of Galatians 1 include Paul’s introduction and his stern rebuke of the people of Galatia abandoning the true Gospel and being swayed by those false teachers. Much like today, the false gospel these teachers espoused created a plethora of Jews who made a merely superficial profession of faith but eventually turned back to their works righteous ways. These folks were what we today would consider false converts and it was they (Judaizers) who arose within the church itself, “speaking twisted things” and trying to “draw away the disciples after them.” (Acts 20:30) Such is the danger of false conversions and false teachers within the church.