I think everybody suffers from a bias to a degree.
I dont think its fair to strictly apply intellectual mind-set to a religious mind of thousands of years ago becouse in its sense even sun is not a light becouse whatever light it has its only becouse of God. Its like taking some poetry and tearing it to pieces with logic pointing out it flaws and proclaiming the supremacy of an intellect - well you just missed the whole poetic significance.
I agree that everyone has biases. Talking about bias is changing the subject. Saying that the light of the sun comes from God is also changing the subject. The sun does not
reflect God's "light". The sun generates light through the process of burning and consuming its own fuel. Whether "god" created the sun and moon is irrelevant to my point. The sun is literally a ball of boiling burning gas and molten material, and fire, generating its own light, and thus it is a light. The moon is a cold dead rock that can only reflect the suns light, and therefore it is not a light. Therefore, when Genesis claims that the moon is a light, Genesis is wrong.
Pointing out that Genesis is "poetry" is just making my point. Again, I don't precisely agree, as I think that the author of Genesis intended it as a literal accounting of how the universe was created, however, even assuming that it was always intended as poetry, mythology, metaphor, whatever, rather than a literal account... that just further makes my point
that it is not accurate. It is just a story... like "The three little pigs, or "The Iliad", or "T'was the Night before Christmas"... and as such, should be given no more credence or authority as "truth" then those stories. And if it was originally intended as literal, but we now know better, and can appreciate it as poetry (this is my view) then fine. If its poetry, let it be poetry, no more no less.