Interesting find. I first read that phrase in Stephen King's Nightmares and Dreamscapes.
I also missed a line in Jon Irencus' speech.
"You dare to attack me here!? Do you even know whom you face? You will suffer! You will all suffer!" - Jon Irenicus, Baldur's Gate II
One of the best villains of all time in my opinion.
http://www.youtube.com/watch?v=Hk0sOGVSAP4