“Now I want you to know, brothers, that the gospel preached by me is not based on human thought. For I did not receive it from a human source and I was not taught it, but it came by a revelation from Jesus Christ” (Galatians 1:11-12, HCSB).
In his letter to the Galatians, the Apostle Paul refutes those who add or change the original message of the gospel he preached to them, particularly those who were teaching the Galatians to keep the requirements of the Mosaic law, like circumcision, to be justified before God.