15 And Moses and Joshua went up to the mountain, and the cloud covered the mountain.
Exodus 24:15 Cross References - LXX2012
Exodus 19:9
9 And the Lord said to Moses, Behold! I come to you in a pillar of a cloud, that the people may hear me speaking to you, and may believe you for ever: and Moses reported the words of the people to the Lord.
Exodus 19:16
16 And it came to pass on the third day, as the morning drew near, there were voices and lightnings and a dark cloud on mount Sina: the voice of the trumpet sounded loud, and all the people in the camp trembled.
2 Chronicles 6:1
1 Then said Solomon, The Lord said that he would dwell in thick darkness.