Zohar for All, Lech Lecha, Item 101: In the middle of the garden is a pillar that is formed with all the colors. When that Ruach wishes to rise to the world of Atzilut, it undresses that clothing of the air of the Garden of Eden and goes into the pillar, rising up to the place from which it came out, to the Nukva de Atzilut, as it is written, “And the spirit will return to God who gave it.”
This pillar consists of three lines that seem to intertwine, resembling a twisted column or the spiral of a DNA molecule.
Question: And why does it rise intertwined and not straight?
Answer: Because one quality constantly prevails over the other. It should be so that they always seem to interact with each other in various combinations, each manifesting itself at the expense of the other. We cannot feel one thing without comparing it with another.
Therefore, intertwining in such an alternate combination of who is bigger, who is smaller, in what qualities, they eventually carry us forward, lift us up into the world of Atzilut.
From KabTV’s “The Power of The Book of Zohar” #18