Since the new Star Trek movie is out I thought that I would post this quote.
When I think of Luke, I think of the Dr. "Bones" McCoy on Star Trek. He seems like your archetypical family doctor: down-to-earth, sensitive, compassionate, and thoroughly human. Matthew and his Gospel seem more kingly, like Captain Kirk. John and his Gospel seem more prophetic and philosophical and mystical, like Mr. Spock. But Luke seems more priestly and more doctorly, like "Bones" McCoy. Matthew emphasizes morality and the will. John emphasizes wisdom and the mind. Luke emphasizes compassion and the feelings. To complete the Star Trek analogy, Mark is the practical engineer Scotty. Peter Kreeft
I have also seen the Star Trek characters connected to the Myer-Briggs personality types. I wounder if this fits with Matthew, Mark, Luke, and John's personality?