User blog comment:ImperiexSeed/The oldest being, archangel or leviathan?/@comment-86.152.141.13-20120417201704/@comment-98.116.73.103-20120501231838

That's proven to be false. Seeing how a witch used a paralysis spell against Chet for three days to work. And how ghost bobby used telekinesis against Dick Roman. It easily stands that Archangels can effect them effortlessly.

Something everyone in this blog needs to know: unkillable DOES NOT mean unstoppable. The Winchestors easily incapacitated them by chopping their heads off and sealing it in a box. So even if an archangel, angel, or demon can't kill them, they can more than enough incapacitate the leviathans easily. Far more so easily than the winchestors who are just skilled humans.