have been wondering if it would be possible? no doubt i'm an idiot for asking,but i would be interested in anyone who has played such a character,and how you dealt with enemies e.t.c non lethally

EDIT i play on 360

You're not an idiot for asking, don't be silly.

I was toying with the idea of roleplaying a Jesus-like character a few months back; somebody (prob a Breton) who wears robes and sandals and literally carries no weapons. But, ya know....never got around to it.

It's totally possible, though.
Some questlines would have to be avoided, though. You'd have to have your character ask: "What Would Jesus Do?" Lolz.
@black viper: how could you do Arena with no kills?

Yes.. illlusion is key. So is a bit of Mysticism (detect life, so you know what to expect). Alteration might come in handy so you can eventually walk on water and such.
So far people have mentioned Frenzy, Paralyze, and Invisibility, nobody has mentioned "calm" spells. That's the way to go early on.
Frenzy = causing somebody
else to assault and/or kill, paralyze effects don't last very long, and both paralyze and invisibility only kick in after Journeyman. Correct me if I'm wrong, but I'm pretty sure you can start calming early on in the game.
Fear is also a good non-assault spell, although if you're roleplaying somebody who's a total pacifist, it's kinda silly to have enemies run away from you all the time.