"Yes, I understand your hesitation, but I'm done playing games with you. If you hadn't been pointed out to me, I would have never known you. If you have a nit to pick, pick it with God, not me." He stepped out of the circle then and, as he said he was going to, he sat down at a nearby table.
Frankly, Mephisto was done playing games with Ariel. That time he did caused a bitter emotion when he thought of it, because it not only condemned him to Hell, but it cost him any chance of Heaven. It wasn't with Ariel that he held the grudge. "You summoned Raziel, and I am here to do Raziel's work. I will not deny you your answers, asking nothing in return. I know all that I once did, that will never change. You were right in summoning me."