The Word of God and its symbolism in the Hebrew letters, the Rosy Cross, Isaac, Jacob, Lot, the Exodus, and more.  Lecture quote:

"In order to receive knowledge, understanding, of the path towards God, we need what is called in the Hebrew language Kabbalah. This comes from kabel, which is a word in Hebrew that means “to receive,” and in order to receive the meaning of what we are studying, we have to enter into a contemplative state. You can call it meditation, prayer, or concentration, but your mind, your whole being, has to be concentrated in your Inner God in order to receive. All the prophets were Kabbalists, meaning they received the Word of God. The 22 letters are synthesized in the word, because every single thing that is written in the Bible is written with the 22 letters. The whole Bible is written with these letters which, I repeat, you find in the internal planes. This is how you start understanding the Word of God."