Satan appeared before a church congregation. Everyone started screaming and running for the church door, trampling each other in a frantic effort to get away. Soon everyone was gone except for an elderly man who sat calmly at the front of the church.
Satan walked up to him and said, "Don't you know who I am?"
The man replied, "Yep, sure do."
Satan asked, "Aren't you going to run like the others?"
"Nope, sure ain't", said the man.
Satan asked, "Why aren't you afraid of me?"
The elderly man replied, "I have been married to your sister for the past 47 years"