And יהוה said to Mosheh, “Speak to Aharon your brother not to come in at all times to the Set-apart Place inside the veil, before the lid of atonement which is on the ark, lest he die, because I appear in the cloud above the lid of atonement.
יהוה is patient and great in power, but by no means leaves unpunished. יהוה has His way in the whirlwind and in the storm, and the clouds are the dust of His feet.
“And you came near and stood at the foot of the mountain, and the mountain burned with fire to the heart of the heavens – darkness, cloud, and thick darkness.