What teaching did they want to convey in Khmer culture with the two snakes?
Answer from the V.M. Samael Aun Weor.
It is not out of place in this Treatise to emphatically cite the double esoteric character of the serpent.
Distinguish between the tempting serpent of Eden and the bronze Serpent that healed the Israelites in the desert; between the horrifying Python that crawled through the mud of the earth and that Apollo, irritated, wounded with his darts and that other one that ascended the staff of Aesculapius, the God of Medicine. When the igneous Serpent of our magical powers ascends through the spinal cord canal of the human organism, it is our Divine Mother Kundalini. When the igneous serpent descends projecting from the coccygeal bone towards the atomic hells of man, it is the abominable Kundartiguador organ. Samael Aun Weor. Secret Doctrine of Anahuac. In the Bayón temple, many figures of human faces and statues of elephants stand out, reminding us of the different parts of the being and the need to specify the integration of each of these parts. It should be noted that at the entrance to the temple on both sides of the central corridor there are human figures holding the body of a huge snake, on one side there are happy, smiling beings carrying the snake of light, and on the other hand grotesque, deformed beings , horrible ones that carry the dark serpent. We then have two snakes, one that enslaves us and the other that frees us. The Wisdom of Being Magazine 99, Chapter: "Renaissance style." Answer from the Magazine "The Wisdom of the Being".