6 We do, however, speak a message of wisdom among the mature, but not the wisdom of this age or of the rulers of this age, who are coming to nothing. 7 No, we declare God’s wisdom, a mystery that has been hidden and that God destined for our glory before time began. 8 None of the rulers of this age understood it, for if they had, they would not have crucified the Lord of glory.
9 The true light that gives light to everyone was coming into the world. 10 He was in the world, and though the world was made through him, the world did not recognize him. 11 He came to that which was his own, but his own did not receive him. 12 Yet to all who did receive him, to those who believed in his name, he gave the right to become children of God— 13 children born not of natural descent, nor of human decision or a husband’s will, but born of God.
24 “What do you want with us, Jesus of Nazareth? Have you come to destroy us? I know who you are—the Holy One of God!”
25 “Be quiet!” said Jesus sternly. “Come out of him!” 26 The impure spirit shook the man violently and came out of him with a shriek.
And of course many other such scenes in Mark.
Of Marcion:
From the Vision of Isaiah:
... (pocket gospel)
18. And when He had grown up He worked great signs and wonders in the land of Israel and of Jerusalem. And after this the adversary envied Him and roused the children of Israel against Him“, not knowing who He was, and they delivered Him to the king, and crucified Him, and He descended to the angel.
It seems to me that this narrative explains many aspects of later narratives and beliefs. It is easy to see how Marcionite beliefs could stem from a story like this.
But in Vision of Isaiah "the god of that world" is Beliar/Satan. Yet it seems that Marcion took "the god of that world" to be Yahweh. But according to many Qumranic writings various sects of Jews, like the ones at Qumran viewed Beliar/Satan as the "lord of this world". And the whole point of the War Scroll and other such writings was that the world was presently ruled by Beliar/Satan and the Sons of Light needed to overthrow the rule of Beliar/Satan through military conquest, presumably by defeating the Romans militarily.
It seems to be that Vision of Isaiah builds on the themes of the story of Judith, to say that Beliar/Satan cannot be defeated by direct military confrontation, rather the Messiah must defeat Beliar/Satan through deception, just as Judith did. So the Heavenly Messiah must disguise himself (like Judith) to trick his way into the realm of Beliar/Satan, just as Judith disguised herself to make her way into the camp of Holofernes. And once in the realm of Beliar/Satan, then the Messiah can defeat him "in his own camp", just as Judith beheaded Holofernes in his own bed. So this all builds on existing Jewish literary traditions that stem from stories about how to overcome what appear to be insurmountable odds.
But it seems to me that what happened was that this Vision of Isaiah narrative came before any of the other Gospels, and Marcion knew this story. The writer of Mark also knew the story, but when Mark wrote his narrative, he intentionally contradicted the pre-existing Vision of Isaiah narrative. In Mark's story the Jews were not deceived into killing the Messiah by not knowing who he was, rather Mark made them knowing accomplices.
It seems that Marcion was trying to reconcile the Marcan narrative with the prior narrative from Vision of Isaiah, in which the heavenly Messiah descends directly into this world and is transfigured into the form of a man, whereby he deceives the Jews into crucifying him so that he can enter the realm of Beliar/Satan.