Mark showed the life of Jesus as a servant through the eyes of Peter. I believe he was a disciple of Peter. He writes events in rapid fire succession. His books are full of the highlights of miracles and some of the teachings of Jesus, but from the lens of Jesus being a servant. Since he was writing for the Romans, I’m guessing the Romans weren’t looking for a “king”, but were attracted to Jesus’ heart to not be served, but to serve. Mark reminds us that we are called to do the same, but reassures us that Jesus will the one working through us.