Contradiction with 1 Kings 8:12
This verse states that God dwells in thick darkness, which contradicts the idea in Exodus 20:21 that God moves away from darkness.
1 Kings 8:12: Then spake Solomon, The LORD said that he would dwell in the thick darkness.
Contradiction with 1 John 1:5
This verse states that God is light and in Him is no darkness at all, contradicting the notion of God being associated with clouds or darkness as in Exodus 20:21.
1 John 1:5: This then is the message which we have heard of him, and declare unto you, that God is light, and in him is no darkness at all.