Can atheists convert theists?

[Purple Rabbit]

Knight... being an atheist doesn't require any knowledge of God.

All I know of God is the concept of a "deity" as with all I know of the Easter Bunny is the concept of "The Easter Bunny" - I claim no knowledge of the Easter Bunny... I just reject its existence. As with God.

Nice example EvF. The point is that with that you don't really reject any specific Easter Bunny at all. I'd say that you simply reject the soundness of the proposition on basis of lack of definition, coherence and meaning. If you were told that there lives a guy called Easter Bunny you would have to re-evaluate your position. You reject the soundness of the proposition, not the existence of any definition of Easter Bunny.