According to film critic Chris Stuckmann, Oshii had 'a falling out with his faith' prior to making Angel's Egg, and that much becomes clear as the film progresses. Angel 's Egg is rich in religious symbolism, but the message is far from positive. Oshii is known to have studied Christianity for a number of years, and most of his works incorporate Christian themes.
It's meant to be admired for its unique style rather than fully understood, but there's a story in there, if you know where to look. On the surface, Angel's Egg is just a beautifully executed art house film, a 'poem come to life through visual interpretation,' as Classic Anime Museumputs it. The first real line of dialogue comes 25 minutes into this 71 minute movie. The film only has two characters, and they don't speak very often. Released a decade earlier, Oshii's collaboration with legendary artist Yoshitaka Amano requires patience.