By no means! Let God be true though every one were a liar, as it is written, "That you may be justified in your words, and prevail when you are judged."

For there is no truth in their mouth; their inmost self is destruction; their throat is an open grave; they flatter with their tongue.

May the LORD cut off all flattering lips, the tongue that makes great boasts,

The words of his mouth are trouble and deceit; he has ceased to act wisely and do good.

Your tongue plots destruction, like a sharp razor, you worker of deceit.

My soul is in the midst of lions; I lie down amid fiery beasts-- the children of man, whose teeth are spears and arrows, whose tongues are sharp swords.

For your hands are defiled with blood and your fingers with iniquity; your lips have spoken lies; your tongue mutters wickedness.

They bend their tongue like a bow; falsehood and not truth has grown strong in the land; for they proceed from evil to evil, and they do not know me, declares the LORD.

Have you not seen a false vision and uttered a lying divination, whenever you have said, 'Declares the LORD,' although I have not spoken?"

You brood of vipers! How can you speak good, when you are evil? For out of the abundance of the heart the mouth speaks.

So also the tongue is a small member, yet it boasts of great things. How great a forest is set ablaze by such a small fire!

The poison

their wine is the poison of serpents and the cruel venom of asps.

yet his food is turned in his stomach; it is the venom of cobras within him.

They make their tongue sharp as a serpent's, and under their lips is the venom of asps. Selah

General references

Their quiver is like an open tomb; they are all mighty warriors.