The Lamb Lies Down on Broadway is about the wonders of childbirth.
Example One - All the illusions to "liquid". ("The liquid has congealed, which has seeped out through the crack"; "White liquid turns sour within"; etc.) Squick. Example Two - Thinly veiled references otherwise pointing towards conception. ("He guesses he must be in some sort of cave... or eggshell waiting to drop from the bone of the womb.")
Example Three - Counting Out Time. Enough Said.
The Guaranteed Eternal Sanctuary Man from "Supper's Ready" and the televangelist from "Jesus He Knows Me" are one and the same.
He wanted to trick people into unknowingly supporting decadence, so he disguised himself as a televangelist, managing to get lots of people to fall for his trickery. It's only during the events of "Supper's Ready" that he's found out.- Could explain why the protagonist turns the television off before actually being called to the table.
The titular home from "Home by the Sea" is Alcatraz.
There are many lyrics in the song that imply that people are being held in the home against their will (help us someone, let us out of here). Also, Alcatraz is on an island (a home by the sea). The viewpoint character from "Misunderstanding" is also the viewpoint character from Led Zeppelin's "Fool in the Rain".
Since both songs are about someone waiting in the rain for their loved one and wondering where they are, it's not implausible that they're about the same person. If we put the two songs together, the story could happen this way: the man in the song waits in the rain for hours, and when his girlfriend doesn't come, he walks home. But as he's walking home, he realizes that he was waiting on the wrong block all that time, and so he tries to find his girlfriend...but by the time he does, she's found someone else, since she thought he deliberately stood her up, and the man she found was just finishing a date with her (or whatever "He was just leaving" was supposed to refer to) as the narrator found them. So yeah, there very much was a misunderstanding...
"Keep It Dark" is about the same character from Radiohead's "Subterranean Homesick Alien".
Although "Keep It Dark" was written beforehand, the Radiohead track could be written as a response. Both songs are about a man being abducted by aliens - "Subterranean Homesick Alien" being about a man who would tell everyone about what he sees if he was abducted - "I'd tell all my friends but they'd never believe me, they'd think that I'd finally lost it completely", and "Keep It Dark" is about an older version of the same character who has been abducted and can't tell anyone for fear of the same treatment - "I wish that I could really tell you, All the things that happened to me, And all that I have seen." Rael dies at the beginning of The Lamb Lies Down on Broadway, and the rest of the album is him going through Purgatory.
The taxi driver blowing his horn hit Rael, and there are lots of symbols regarding death and the afterlife.- The "movie screen" that appears represents his life flashing before his eyes.
- The carpet crawlers are those who think they know how to get into heaven but are stuck in Limbo because their pride won't let them admit that they need help.
- Lilywhite Lilith (despite her meaningful name) is an angel. Admitting that he can't move on on his own is the first test Rael has to pass.
- The killing and consuming of the Lamia represents Rael coming to terms with, and internalizing his sinful nature.
- The Slippermen offer Rael a chance to see his soul as the twisted, damaged, ugly thing it is after a life of sin.
- The Doktor is a reference to Matthew 5:30 ("If your right hand causes you to stumble, cut it off.") In this case choosing to literally have the offending body part removed allows Rael to move on.
- Finally Rael is forced to choose between going through a gate which he is led to believe will let him escape and saving his brother from a raging river. The gate would have led him to straight to Hell! By choosing the difficult but selfless path he ends up literally saving himself (see Tomato in the Mirror on the main page) and is taken up into Heaven at the end.
The Title Track of A Trick of the Tail is an extended metaphor about the departure of Peter Gabriel.
The song seems to be about a satyr-like "Beast" who gets bored with his utopian City of Gold and leaves to explore the human realm. Once there, he's quickly captured and imprisoned in a freak show. Fortunately, he escapes and returns home with a new appreciation for his world, and his people happily take him back. So what's the connection? Like the Beast, Gabriel had just left a familiar situation to try his luck in a new, possibly dangerous world where his fate was anything but certain. The song was his bandmates' way of letting him know that if his solo career didn't work out, he could always come back to Genesis; like the Beast, he would be welcomed home.