What does the Bible say about the apostleship of Paul?

The apostleship of Paul is affirmed in Galatians 2, where he emphasizes that he received the gospel not from man, but by revelation from Jesus Christ. This positions him as equal to the other apostles, as he met the requirements that included receiving the gospel directly from Christ. False teachers had questioned Paul’s authority, but his defense illustrates that God alone validates his calling. Paul demonstrates that his message aligns with the original gospel of salvation through faith in Christ alone, highlighting that there is only one true gospel recognized by both him and the other apostles.