In some legends, Adam had a wife named Lilith. She was NOT made from his rib. Long story made short, she refused to be his bitch, invoked God's name (a big no-no at the time), and left. Adam didn't like this, so God sent three angels after her, but she was with fallen angels and producing children.
These children are the lilin you read about. Basically, they're demons.
The angels said that, for every day Lilith wouldn't return, they'd kill 100 of her children. She said no and that she'd kill Adam's children w/ Eve in retaliation.
Supposedly, if you put the names of the 3 angels near the baby, she'll spare it. But that's Lilith.
I read about her after I read the Lion, the Witch, and the Wardrobe, b/c the Witch was one of Lilith's descendents
