User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-76.95.86.12-20120519182004/@comment-5110811-20120521212151

They are not just powerful angels. They are immeasurably beyond that of all angels and other creatures except for God and Death. Their grace is far beyond that of any angel because of their close bond to God. So odds are they at least have a much higher resistance to the Leviathan's blocking power because of the Archangel's personal connection to their father God. It would make sense because the top two archangels Michael and Lucifer have shown and proven to override standard angel weaknesses such as holy oil, spells and powers from pagan gods, and a shot from the colt.