Chapter twenty-one of the Tanya makes a metaphysical claim about Torah study that goes beyond anything said before: when you study Torah, God wraps Himself around your mind.
The logic runs like this. God's speech is not like human speech. When a person speaks, the words leave the speaker and become separate entities—sounds in the air, marks on paper, independent of their source. But God's speech never separates from God. There is nothing outside of God. There is no place devoid of God. Therefore the words through which God created the universe—"Let there be light," the ten utterances of creation—remain forever embedded in their source, which is God Himself.
These divine utterances include the Torah. When God said the words of the Torah—at Sinai, through the prophets, through the entire chain of revelation—those words did not leave God. They are still God's speech, still fused with God's essence, even as they appear in the form of laws about property disputes, dietary restrictions, and ritual observance.
Rabbi Schneur Zalman draws the analogy. In a human being, speech and thought, before they are articulated, exist as undifferentiated potential within the intellect. At that stage, they are inseparable from the mind that conceives them. God's speech works the same way—except it never leaves that stage. Even after creation, even after the words have produced a physical universe, they remain in absolute union with their source.
The implication for Torah study is staggering. The laws you are studying are not representations of God's will. They are God's will, still alive, still united with the divine essence. When your mind wraps around a halacha (Jewish religious law)h, it is wrapping around God. When God's Torah enters your consciousness, God is wrapping around you.
This is not poetry. The Tanya means it as a statement about reality. Torah study is the one human activity that achieves total reciprocal union between the finite mind and the Infinite. Everything else—prayer, charity, meditation—approaches from one direction. Torah study is the embrace from both sides simultaneously.