User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-98.113.182.208-20120515042306

Metatron is confirmed to be older than the Leviathans according to Castiel. Cas said Metatron took dictation when creation was being formed. Not after. His language is so old that angels can't even read it. Not even Dick can read it. So there you have it.