Where did Mark the Evangelist get his information to make his book in the Bible?

Answer 1

Even the most conservative theologians acknowledge that Mark never met Jesus in person, so could not have learnt of the gospel from him. Papias, bishop of Hieropolis in Asia Minor (ca.130), named Mark as the author of the (previously anonymous) gospel and the 'interpreter' of Peter, presumably as if Mark had written from Peter's memory and notes as his secretary (Eusebius, Ecclesiastical History, 3.39).

There is no real reason to rely on Papias' asumptions, which means that we do not even know the true identity of the Gospel's author, and Raymond E. Brown (An Introduction to the New Testament) assumes that Mark seems to depend on traditions (and perhaps already shaped sources) received in Greek. Parallels between Mark's Gospel and Pauls epistles to the Romans and the Corinthians suggest that these sources might have been no more than these brief references in the epistles, fleshed out by 'Mark' himself, to create the story of Jesus of Nazareth.