A pastor went out one Saturday to visit his church members. At one house, it was obvious that someone was home, but nobody came to the door even though the preacher knocked several times. Finally, the preacher took out his card, wrote out "Revelation 3:20" on the back of it, and stuck it in the door:
Behold, I stand at the door and knock. If anyone hears my voice and opens the door, I will come in to him and dine with him, and he with me. - Revelation 3:20
The next day, the card turned up in the collection plate. Below the preacher's message was written the following notation:
I heard your voice in the garden, and I was afraid because I was naked; and I hid myself. - Genesis 3:10