User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-190.92.7.204-20150612220839/@comment-5961531-20150613223911

When did Alastair say that Lilith couldn't kill an Angel...?

Regardless of whether Lilith could or not, Alastair owned Castiel, twice. Okay, he didn't know how to kill him, but given that he overpowered him easily, twice, he could have quite easily have killed him. All Alastair was lacking at the time was the knowledge and means to do so. Knowledge however does not indicate superior power. So, just because Cain might have known how to kill Angels, that doesn't mean he was more powerful than Lilith.