spiders are attributed to saving the life of Christ as an infant. Apparently, the Holy Family needed a hideout to elude Herod. They hid in a cave, and spiders wove a thick web at the entrance of the cave making it appear abandoned (and icky) so Herod avoided looking for the Christ child in the cave altogether. Superstition insists it's unlucky to kill a spider. "if you want to live another day, let a spider go her way.
