Cloud
In Genesis 9:13, this signifies the state of light in obscurity of the regenerate spiritual man. (Arcana Coelestia 1042)
In Exodus 13:21, this signifies a state of enlightenment tempered by obscurity in respect to truth. (Arcana Coelestia 81-86)
In Psalm 147:8, this signifies that the Lord defends and preserves the spiritual meanings of the Word by the natural truths in through the Bible's literal sense. (Apocalypse Explained 594[12])
In Isaiah 60:8, this signifies to search and investigate truth from the Word's literal sense. (Apocalypse Explained 282[5])
In Isaiah 19:1, the phrase 'Jehovah rides upon a light cloud, and comes into Egypt', signifies the visitation of the natural man from spiritual-natural Divine Truth, for a visitation is an examination into the quality of a man, and examination is made by means of Divine Truth. A light cloud denotes the spiritual-natural Divine Truth from which the quality of man as to his natural-self becomes evident.
(References: Apocalypse Explained 654)
Exodus 14:19-21
19
The angel of God, who went before the camp of Israel, moved and went behind them; and the pillar of cloud moved from before them, and stood behind them.
20
It came between the camp of Egypt and the camp of Israel; and there was the cloud and the darkness, yet gave it light by night: and the one didn't come near the other all the night.
21
Moses stretched out his hand over the sea, and Yahweh caused the sea to go back by a strong east wind all the night, and made the sea dry land, and the waters were divided.
