James 3:8
but the tongue no human being can tame. It is an evil incapable of being quieted, full of deadly poison.
Romans 3:13
Their throats are just like open graves, with their tongues they have spoken treachery; the poison of asps is under their lips.
James 3:6
And the tongue is a fire, and takes its place among the parts of our bodies as a world of evil; it soils the whole body and sets on fire the circle of man's nature, and itself is set on fire by hell.
Revelation 12:9
So the huge dragon, the ancient serpent, called the devil and Satan, who deceives the whole world, was hurled down to the earth, and his angels were hurled down with him.