Because of its surreal nature, this scene might be the hardest one to understand. According to this Reddit post, even the producers do not have an explanation for it. Let’s turn to the writings of Jung and Edinger to see what we can extract from the symbolism of the giants.
Edinger touches a few times on the image of the giants.
1/ In Transformation of the God‑image, Edinger points out an apocalyptic dream.
This is a dream of a man who later became a Jungian analyst:
“[…] It was the end of the world. The cause of this great destruction was a race of great giants—giants who had come from outer space—from the far reaches of the universe. In the middle of the rubble I could see two of them sitting; they were casually scooping up people by the handful and eating them. The sight was awesome.” […]
[This dream] is a very vivid expression of the activation of the archetypal contents of the unconscious. That’s what the giants represent—the archetypes. They’re bigger-than-life things. And as they descend onto earth the image of their devouring human beings is an expression of individuals being eaten up by identification with the archetypes that are falling into the individual conscious psyche. So being devoured by giants is an image of succumbing to inflation.
2/ In Archetype of the Apocalypse, we find the same theme explored in a way that deserves to be quoted extensively.
Let us now consider the theme of “harvesting” as found in the following long apocalyptic passage:
“Now in my vision I saw a white cloud and, sitting on it, one like a son of man with a gold crown on his head and a sharp sickle in his hand. Then another angel came out of the sanctuary and shouted at the top of his voice to the one sitting on the cloud, ‘Ply your sickle and reap: harvest time has come and the harvest of the earth is ripe.’ Then the one sitting on the cloud set his sickle to work on the earth, and the harvest of earth was reaped. Another angel, who also carried a sharp sickle, came out of the temple in heaven, and the angel in charge of the fire left the altar and shouted at the top of his voice to the one with the sharp sickle, ‘Put your sickle in, and harvest the bunches from the vine of the earth; all its grapes are ripe.’ So the angel set his sickle to work on the earth and harvested the whole vintage of the earth and put it into a huge winepress, the winepress of God’s anger, outside the city, where it was trodden until the blood that came out of the winepress was up to the horses’ bridles as far away as sixteen hundred furlongs.” [Revelation 14:14-20, New Jerusalem Bible]
What a terrible image! Although not spelled out explicitly, the underlying idea here is that humanity is a vast “agricultural process” for God to harvest for his own food and drink. The idea comes up elsewhere; it appears, for instance, in the seventh chapter of the apocryphal Old Testament scripture, 1 Enoch. There, Enoch is describing what was taking place just before Noah’s flood, when angels or heavenly beings descended from heaven and married the daughters of men. Here is what he says:
“And all the others together with them took unto themselves wives, and each chose for himself one, and they began to go in unto them and to defile themselves with them, and they taught them charms and enchantments, and the cutting of roots, and made them acquainted with plants. And they became pregnant, and they bare great giants, whose height was three thousand ells: Who consumed all the acquisitions of men. And when men could no longer sustain them, the giants turned against them and devoured mankind.” [Enoch 7:1-4]
Jung comments upon this passage in Answer to Job and says that the “giants” are pointing to “an inflation of the cultural consciousness at that period,” just before the mythological Flood. […]
What does it mean to be “eaten by giants?” It means to succumb to inflation, a psychological condition that is endemic in our time. In an interesting passage in the Gnostic Gospel of Thomas, Jesus says: “Blessed is the lion which becomes man when consumed by man; and cursed is the man whom the lion consumes, and the lion becomes man” (Logion 7). Here are stated two possibilities: the first is that man eats lion, and lion becomes man; the second is that lion eats man, and man is assimilated to lion stuff—and blessed is one and accursed is the other. That is precisely the psychological issue for consciousness when the collective unconscious is activated or even when it lives itself through us unconsciously. To the extent that the ego is eaten by one of the archetypal “giants” or “lions,” the human being has become inhuman; and that is a disaster. On the other hand, to the extent that the experience of the collective unconscious can be assimilated and understood by consciousness, then the archetypes are humanized. This is the issue behind the “harvesting” imagery in Revelation. And it is the fundamental issue running throughout all levels of existence: Who eats whom? It is absolutely elementary for all life processes and applies not only to the physical world but to psychological existence as well.