And the LORD said unto Moses, Speak unto Aaron your brother, that he come not at all times into the holy place within the veil before the mercy seat, which is upon the ark; that he die not: for I will appear in the cloud upon the mercy seat.
The LORD is slow to anger, and great in power, and will not at all acquit the wicked: the LORD 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 unto the midst of heaven, with darkness, clouds, and thick darkness.