Proverbs 12:18
Speaking rashly is like a piercing sword, but the tongue of the wise brings healing.

Psalm 52:2
Your tongue devises destruction like a sharpened razor, O worker of deceit.

Psalm 55:21
His speech is smooth as butter, but war is in his heart. His words are softer than oil, yet they are swords unsheathed.

Psalm 57:4
My soul is among the lions; I lie down with ravenous beasts whose teeth are spears and arrows, whose tongues are sharp swords.

Psalm 120:3, 4
What will He do to you, and what will be added to you, O deceitful tongue? . . .

Psalm 140:3
They make their tongues as sharp as serpents; the venom of vipers is on their lips. Selah

Jeremiah 9:3, 8
"They bend their tongue like their bows; lies instead of truth prevail in the land, for they proceed from evil to evil, and they do not take Me into account, " declares the LORD. . . .

James 3:6
The tongue also is a fire, a world of wickedness among the parts of the body. It pollutes the whole person, sets the course of his life on fire, and is itself set on fire by hell.