Contradiction with Exodus 19:18
Exodus 19:18 describes Mount Sinai covered in smoke due to the LORD descending on it in fire, which contrasts with Psalms 105:39 depicting a cloud for guidance and shade rather than smoke or fire.
Exodus 19:18: And mount Sinai was altogether on a smoke, because the LORD descended upon it in fire: and the smoke thereof ascended as the smoke of a furnace, and the whole mount quaked greatly.
Paradox #1
The verse describes a natural phenomenon (a cloud and fire providing guidance or protection) in a way that might not align with scientific understanding, since clouds and fire do not behave as described in literal terms. It involves supernatural elements that science does not recognize, as science relies on natural processes and explanations.