[quote=@souleaterfan320]
<Snipped quote by Zeal>

...your forgetting that I contain over a billion souls within me. I have fought for several millennia with a single opponent before.
[/quote]

And he's been fighting death for his whole life. His body died and his sould was fighting a figmentation of death. He died and still fought. That is how one becomes The Archangel of Death.