The Jesus album is actually pretty astute and funny. It was made in the late-60s/early 70s, when JC Superstar/Godspell/Joseph Technicolor/etc and all the "God Rock" was big. Jesus comes back, is of course ignored and ostracized until some show biz people figure they can market him as the ultimate "God Pop" experience. Well, of course he's a huge hit at first, but then he goes and spoils it by talking about everybody giving up their wealth and all that, and then, well, you know how show biz can be. Meader sure did...
The writing is pretty spiky in places, and the acting is first-rate. Don't know if I'd call it a "lost masterpiece" necessarily, but I've heard/read it dismissed as "wacko" more than once just because of the subject matter, when in fact it's anything but.