What is Concealed, What is Revealed?:

(16) On the third day, as morning dawned, there was thunder, and lightning, and a dense cloud upon the mountain, and a very loud blast of the horn; and all the people who were in the camp trembled. (17) Moses led the people out of the camp toward God, and they took their places at the foot of the mountain. (18) Now Mount Sinai was all in smoke, for Adonai had come down upon it in fire; the smoke rose like the smoke of a kiln, and the whole mountain trembled violently. (19) The blare of the horn grew louder and louder. As Moses spoke, God answered him in thunder.

(1) THE REVELATION ON SINAI
THE sixth descent was when He came down on Sinai, as it is said, "And Adonai came down upon Mount Sinai" (Ex. 19:20). On the sixth of Sivan the Holy One, blessed be He, was revealed unto Israel on Sinai, and from His place was He revealed (on) Mount Sinai, and the heavens were opened, || and the summit of the mountain entered into the heavens. Thick darkness covered the mountain, and the Holy One, blessed be He, sat upon His throne, and His feet stood on the thick darkness, as it is said, "He bowed the heavens also, and came down; and thick darkness was under his feet" (2 Sam. 22:10).

(15) Yet, in truth, even in all the concealments—even in a concealment within a concealment—God is certainly enclothed there as well. Indeed, there is nothing that is without the life force of God, since without His life force it could not exist. Therefore, God is certainly enclothed in all <words> and all deeds and all thoughts, as it were. And even if, Heaven forbid, a person is guilty of sin, which is a transgression of God’s will, God’s life force is certainly still there, albeit in a most hidden and contracted manner.