Mary Moss says she would normally be at church but was filling in for a co-worker when the man entered the Subway restaurant in Canonsburg on Sunday morning demanding money.
Moss says she asked the robber why he was doing it and he said he had a debt. Moss says she told him that the man's only debt was to God.
After a few minutes Moss says she gave the man a soda and asked him to leave.
Twenty-year-old Mario Pellegrini was arrested a short time later with a pellet gun. He's jailed in lieu of $50,000 bail. It's not immediately clear if Pellegrini has an attorney.