Angels in America, Part One: Millennium Approaches Act 3, Scene 6 Summary

It's later that night. Prior I and Prior are staring at each other.
The ghost is wearing robes and he has a bundle of palm leaves.
Prior I asks Prior if he's excited. Tonight's the night – the messenger is supposed to come right through the roof.
Prior II appears, chanting the names of the messenger: "Lumen! Phosphor! Fluor! Candle!" (3.6.3)
Prior holds up a crucifix and garlic and stuff like that to try to scare away the ghosts. They don't pay him any attention.
Prior I notes that Prior is getting an erection. Prior II says they all get hard when beings like the messenger are near.
OK, now it's time to dance, says Prior I.
Prior is not into it.
Prior II surmises that Prior must want someone familiar to dance with. The ghost tells Prior to close his eyes and imagine someone.
Louis appears and asks Prior to dance.
Prior says his leg hurts too badly and asks Louis if he's a ghost.
"No. Just spectral. Lost to myself. Sitting all day on cold park benches. Wishing I could be with you. Dance with me, babe... " (3.6.21).
They dance to beautiful music.
Prior I grumpily vanishes, saying he's done his part.
Before vanishing himself, Prior II says, "The twentieth century. Oh dear, the world has gotten so terribly, terribly old" (3.6.27).
Louis and Prior happily waltz.
Lights fade and Louis vanishes.
Prior waltzes by himself.
Suddenly there's the sound of wings.