What symbols and symbolism do you find in "A very old man with enormous wings"? What do they mean?
The decrepit angel is symbolic of Pelayo's and Elisenda's lack of faith. The angel is crippled, lice-ridden, and filthy. He *could* have been the miracle they hoped for if they had taken proper care of him, and proper care of their faith.
Instead, they got exactly what they deserved. A miracle appears and not only do they not appreciate or recognize it, they actively disdain and exploit it.