User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-3481504-20120608025050/@comment-98.116.81.11-20120609152332

If God wanted to, he could have killed the leviathans himself. But he chose not to. And if he won't do it, He most likely won't allow his next in kin, the archangels, to do it either. For reasons we don't even know.

Jesse Turner is a human/demon hybrid who gets stronger when Lucifer rises. Lucifer created demons. It makes sense that Jesse gets stronger when Lucifer is walking the earth. It also makes even more sense that Lucifer is far more powerful than him because he is the 'God' of all demons. Michael is obivously also. Gabriel is most likely stronger too since his reality warping powers and abilities trumps anything Jesse ever did. Don't know about Raphael. They are the anomalies and exception to the fact that Jesse kills the host of heaven.