Yet another unimportant observation: Matthew really likes dialogue. In some places where Mark has narration, Matthew has a direct dialogue. I’ll give some examples later.
(Mark 3:1-6) Again he entered the synagogue, and a man was there with a withered hand.
And they watched Jesus, to see whether he would heal him on the Sabbath, so that they might accuse him. And he said to the man with the withered hand, “Come here.” And he said to them, “Is it lawful on the Sabbath to do good or to do harm, to save life or to kill?” But they were silent. And he looked around at them with anger, grieved at their hardness of heart, and said to the man, “Stretch out your hand.” He stretched it out, and his hand was restored. The Pharisees went out and immediately held counsel with the Herodians against him, how to destroy him.
(Matthew 12:9-1) He went on from there and entered their synagogue. And a man was there with a withered hand.
And they asked him, “Is it lawful to heal on the Sabbath?”—so that they might accuse him. He said to them, “Which one of you who has a sheep, if it falls into a pit on the Sabbath, will not take hold of it and lift it out? Of how much more value is a man than a sheep! So it is lawful to do good on the Sabbath.” Then he said to the man, “Stretch out your hand.” And the man stretched it out, and it was restored, healthy like the other. But the Pharisees went out and conspired against him, how to destroy him.
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(Mark 4:10) And when he was alone, those around him with the twelve asked him about the parables.
(Matthew 13:10) Then the disciples came
and said to him, “Why do you speak to them in parables?”
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(Mark 6:48b-50) And about the fourth watch of the night he came to them, walking on the sea. He meant to pass by them,
but when they saw him walking on the sea they thought it was a ghost, and cried out, for they all saw him and were terrified.
(Matthew 14:25-26) And in the fourth watch of the night he came to them, walking on the sea. But when the disciples saw him walking on the sea, they were terrified,
and said, “It is a ghost!” and they cried out in fear. But immediately Jesus spoke to them, saying, “Take heart; it is I. Do not be afraid.”
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(Mark 8:31-33) And he began to teach them that the Son of Man must suffer many things and be rejected by the elders and the chief priests and the scribes and be killed, and after three days rise again. And he said this plainly.
And Peter took him aside and began to rebuke him. But turning and seeing his disciples, he rebuked Peter and said, “Get behind me, Satan! For you are not setting your mind on the things of God, but on the things of man.”
(Matthew 16:21-23) From that time Jesus began to show his disciples that he must go to Jerusalem and suffer many things from the elders and chief priests and scribes, and be killed, and on the third day be raised.
And Peter took him aside and began to rebuke him, saying, “Far be it from you, Lord! This shall never happen to you.” But he turned and said to Peter, “Get behind me, Satan! You are a hindrance to me. For you are not setting your mind on the things of God, but on the things of man.”
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(Mark 14:1) It was now two days before the Passover and the Feast of Unleavened Bread.
(Matthew 26:1-2) When Jesus had finished all these sayings,
he said to his disciples, “You know that after two days the Passover is coming, and the Son of Man will be delivered up to be crucified.”
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(Mark 14:10-11) Then Judas Iscariot, who was one of the twelve, went to the chief priests
in order to betray him to them. And when they heard it, they were glad and promised to give him money. And he sought an opportunity to betray him.
(Matthew 26:14-16) Then one of the twelve, whose name was Judas Iscariot, went to the chief priests
and said, “What will you give me if I deliver him over to you?” And they paid him thirty pieces of silver. And from that moment he sought an opportunity to betray him.
This isn’t of course a hard-and-fast rule. There are also instances where Matthew will have narration where Mark has dialogue.