"Satan" joke

A few minutes before the church services started, the towns people were sitting in their pews and talking. Suddenly, Satan appeared at the front of the church. Everyone started screaming and running for the front entrance, trampling each other in a frantic effort to get away from evil incarnate.

Soon, everyone had exited the church except for one old man calmly sitting in his pew without moving, seeming oblivious to the fact that God `s ultimate enemy was in his presence.

So Satan walked up to the old man and said "Don `t you know who I am?"
"Yep, sure do."
"Aren `t you afraid of me?"
"Nope, sure ain `t."
"Don `t you realize I can kill you with a word?"
"Don `t doubt it for a minute."
"Did you know that I could cause you profound, horrifying, physical agony for all eternity??"
"Yep", was the calm reply.
"And you `re still not afraid??" asked Satan.
"Nope."
More than a little perturbed, Satan asked, "Well, why aren `t you afraid of me?"
The man calmly replied......"Been married to your sister for 68 years."