The True GOSPEL did not come from man, nor does it seek to please man. The true GOSPEL came by the revelation of our Lord Jesus Christ.
The word "persuade" in verse 10 means "to seek to please men". If I seek to please men then I cannot be a servant of God.
Galatians 1:10-12 KJV For do I now persuade men, or God? or do I seek to please men? for if I yet pleased men, I should not be the servant of Christ. (11) But I certify you, brethren, that the gospel which was preached of me is not after man. (12) For I neither received it of man, neither was I taught it, but by the revelation of Jesus Christ.
Charles Morris. Founder and Senior Pastor of RSI Ministry, RSI School of Ministry, and RSI Publishing L.L.C..