Alphonse Mucha - images from Le Pater
Mucha considered his publication Le Pater to be his printed masterpiece, and referred to it in The Sun of 5 January 1900 as what he had “put [his] soul into”. Printed on 20 December 1899, Le Pater was Mucha’s occult examination of the themes of The Lord’s Prayer and only 510 copies were produced.
Personally, I think this sort of stuff is more interesting than the usual 4 Seasons stuff.
ETA: These are all Biblical in nature, as noted above (I’ve noted some confusion in the reblogs); the last image is an angel giving Cain the ol’ side-eye for murdering Abel, as I recall.