I did not receive it from any man, nor was I taught it: Jewish scholars mainly relied on teachers. The Judaizers claimed Paul received his special mission and message from the other apostles, but then had unfaithfully changed the message.
I received it by revelation from Jesus Christ: See 1:17; Acts 9:3–15; 26:12–18. Paul's unique experience gave him special authority and insight. However, he learned many things about the life of Jesus from other people (for example, Galatians 1:18; 1 Corinthians 11:23–26; 15:3–11).