13.What did Paul beseech the Christian people in Galatia to do?

To live as he lived, that is, by faith in Christ rather than by practicing the statutes of the Law of Moses.

Verse 12 includes the expression, "for I am as ye are: ye have not injured me at all." The idea of verse 12 seems to be that Paul is beseeching the Galatians to be as he is, a disciple of the Lord Jesus. Their dabbling in the Law of Moses has not harmed him. He is reminding them that he—a Hebrew of the Hebrews—also has had to make drastic changes in his own life in order to become a new creature in Christ.

Paul seems to be enlisting their friendship, showing they are one with him in Christ and he is one with them in Christ. He calls to mind the fact that when he first came and preached to them they had welcomed him, even though it appears he was suffering from some obvious physical ailment. They had not rejected him, not "injured" him, but had received the message of the Gospel of Christ.

Since then the Judaizers had come with their contrary teaching that the Law of Moses is to be included in the Gospel of Christ. They were seeking to destroy the bond between Paul and the Galatians.