When we first moved here there was just a little clump of creeping buttercups which I declared to be a weed.
"Leave them," my husband urged, "they are so pretty."
I left them and now we have them creeping all over the place.
James 3:5-6 (New International Version)
Likewise the tongue is a small part of the body, but it makes great boasts. Consider what a great forest is set on fire by a small spark. The tongue also is a fire, a world of evil among the parts of the body. It corrupts the whole person, sets the whole course of his life on fire, and is itself set on fire by hell.