A Christian believer went to a minister for counsel. He was
very much troubled by the spiritual conflict going on within his heart.
He wanted to do what God wanted him to do, but he was frequently
disobeying God. He found that he was prone to do evil things, just like he did before he ever became a Christian.
The believer described this conflict within himself like a terrible dogfight. He
said to the minister, "It is as though I have a black dog and a white
dog inside me fighting each other constantly." The black dog, he
explained, represented evil and the white dog represented good.
The minister asked him, "Which dog wins the fight within you?"
After several moments of silence, the man said, "The dog that wins is
the one that I feed, and the dog that loses is the one I starve."