Students and professors like to fall into combat concerning the Four Gospels, with an additional treat called the Synoptics. That Greek term (Greek for seen together) is used for Matthew, Mark, and Luke since those three Gospels are closely associated. However, most academics use the alarm weapon of What's Wrong! while missing the important points after a few hours of working over the topic.
The Gospel of John does not need to be used as wrong when it too has wonderful passages and clarifying words. Readers will understand when they are told by know-it-alls that John's Gospel can be attacked the same as Luther's works. Better to study both carefully rather than be a know-it-all.
Here are some thoughts about the Four Gospels during this very special season.
Matthew - The Christian Faith began while fulfilling the Gospel through the works of the Old Testament. The 39 Hebrew books were waiting to be used for the whole truth when the 27 Greek New Testament books were written down and spread rapidly.
Matthew is a solid reminder that the first Gospel is foundational for the early Jewish believers, spectacular miracles in the midst of those touched by the first saints - Mary, Joseph, the Wise Men. And the Star annoys the astronomical message to this day.
Mark - Many overlook the Second Gospel, but that makes the careful readers more diligent. Annoyed by so many miracles? And similar to Matthew and Luke? Mark's readings are not a burden but a series of examples where the divinity power of Jesus the Son of God is revealed. Many students of Mark realize that the details are revealing, not tedious or repetitive.
I have told graduate students that Jesus prayed by Himself very early before dawn. One student knew Mark well and grew quite upset about my statement. "I have never seen that in all my work on Mark!" I let him narrow it down to Mark 1. Soon he came back with Mark 1:35, when the disciples told Jesus to get to work.
“And in the morning, rising up a great while before day, He went out, and departed into a solitary place, and there prayed. And Simon and they that were with Him followed after Him. And when they had found Him, they said unto Him, All men seek for thee.”
Episodes in Mark and the other Gospels are overlooked because of familiarity with those verses.
Luke - The Virgin Birth of Jesus in Luke 2 is a beautiful reminder - making us wonder, "Where did Luke come from? He gave us 25% of the New Testament in give us Luke and the Acts of the Apostles. Luke by itself could be the gem of the New Testament, but add the tremendous historical study of the Acts, by itself (though alone) in historical and religious value.
John - If Matthew and Luke are seen together, how much is greater Genesis and John? - those two books begin verses with Creation and the Trinity. In terms of harmony, both introductions unify the Bible and help us remember what matters most.