Although also substitution cipher like Rot13, this one was used in the Bible! See smithkl42's comment. Knowing how Bible poorly got the other science bits wro

Although also substitution cipher like Rot13, this one was used in the Bible! See smithkl42's comment. Knowing how Bible poorly got the other science bits wrong, that's a significant thing. The writers used at least a real substitution cipher (even if it's a kind-of-simplest we know of today).