"Well see that's the problem right there. The last time I fought with Lilith I kind of destroyed her physical body. She'll regenerate her own in time of course but right now she is like a shadow that flits between bodies. And we're talking about a top level demon too, not a lower level one. For a trap to work on her we would need a very high level priest. At least one of the inner Cardinals if not the pope himself. And there is always the danger that if we could contain Lilith, it would only piss off her brother Lucifer."