These three sons of Noah are the persistence of the entire world ... and from these the whole earth dispersed, for all the souls of people come from them because they are the meaning of the three upper colors in Bina, the three lines...
When the river that stretches out of Eden, Zeir Anpin, watered the garden, the Nukva [female], it watered her by the power of these three upper lines from the upper Bina, and from there the colors spread—white, red, and black...
And when you look in the degrees, you will find how the colors spread to all those sides, right, left, and middle, until they enter below, in Malchut, as twenty-seven channels of doors that cover the deep.
Zohar for All, Noah, Items 302-303
The more we can resemble the light, meaning its quality of giving and love, the more we will connect to it and discover its channels of bounty. In fact, even now we are in the world of Ein Sof, but it is hidden from us by all the worlds — Haalamot [concealments]—that exist within us, in our desire, because it is in contrast to the quality of the world of Ein Sof.
The twenty-seven letters, with the five final letters of Malchut, are twenty-seven channels that bring the abundance to it. They have been made into doors to cover the Dinim in Malchut, which are called “deeps.”
Zohar for All, Noah, Item 303
We ourselves are the ones who are building these channels and the doors above them. Once, these doors open a way for the light, and once they close it, like valves that open and close to the extent of our similarity with the light. Our efforts should be aimed at only one purpose—to make all our qualities resemble the spiritual qualities and receive light in them.
To the extent that we make the egoism in us similar to the light, we will discover within us the qualities of the Creator and the thought of Creation. There is a special part in The Book of Zohar, called Safra de Tzniuta [Book of Humbleness], which talks about it. This is also why it was said, “Wisdom is with the humble” (Proverbs, 11:2).