Biblical Sources of Phrases in Common Use: Blind As a Bat

The phrase "blind as a bat" is based on the misconception that bats are blind.  Of course, bats can see, just not very well, especially in bright light.  Bats are mentioned three times in the Bible (Leviticus 11:19, Deuteronomy 14:18, and Isaiah 2:20), but "blind as a bat" is not biblical in origin.

In Metaphysics (11.1,993a27-993b7), Aristotle (384-322 BC/BCE) said, "For as the eyes of bats are to the blaze of day, so is the reason in our soul to the things which are by nature most evident of all."