While visiting the homes of his parishioners, a new pastor discovered that, at one house, although it was obvious someone was at home, no answer came to his repeated knocks at the door. So he took out a business card, wrote "Revelation 3:20" on the back, and stuck it in the door.
The following Sunday, he discovered that his card had been returned in the collection plate, with a note written below his: Genesis 3:10.
Revelation 3:20 begins:
Behold, I stand at the door and knock.
Genesis 3:10 reads:
I heard your voice in the garden and I was afraid for I was naked.