Abbar Tiano was the first one to suggest out loud that mayhaps Abbar Tiano began to rally people to his cause: a cause that wasn't a war on Irix, but mostly a message that he wanted people to hear. A message that said the gods don't define us. We define us.
Abbar Tiano was most successful in rallying his close community of Drow people, as well as the people he has taught over the years. His army of mostly dark elves put a sour taste in the mouths of their opponents. Dark elves become to be disliked.
Irix didn't take too kindly to Abbar.