I liked his approach though. Claiming to be the next incarnation of God was a good pick-up line.
Man couldn't relate to God, and Jesus was the mediator, but he was perfect. Man still has trouble relating, so this time God appeared in the flesh, but in an imperfect form capable and willing to sin. Hence, David Koresh.
Join my cult, and let me sleep with you, your sister and your daughter. You can't really say no, as I'm God.
Either that or pass the red Kool-Aid.