The Puritans used to speak of the heart of man as a nest of baby vipers. They come wriggling out daily, and they seem so cute, so non-threatening, but they’re just as deadly. And if you don’t stomp them daily, eventually they grow into a dragon. Eventually they grow so big that one day they bite the hand that feeds them. This is your flesh. It must be killed before it kills you.
The culprits of calamity, anxiety, and sin in our daily lives are one or multiple of the seven deadly sins. They hide in the deadly thorn bushes of your heart, and you need a dog (a pastor) to run ahead and shake the thorn bushes of your heart so that the seven deadly sins will be exposed and you can have success in taking them down.