And his lyrics for Osmosis Jones indicate he might be singing for another type of fan

They’re part of the Old Testament, which pulls from Jewish scripture, but it’s all Abrahamic to me. They should post the Beatitudes if they really want to keep things Christian-specific, but they won’t. Why? Just read them (and the corresponding Woes in Luke) and you’ll see. The Wikipedia article should be enough: https://en.wikipedia.org/wiki/Beatitudes