'Deceitful' in the Bible

For they speak not peace, And against the quiet of the land, Deceitful words they devise,

Thou hast loved all devouring words, O thou deceitful tongue.

And they turn back, And deal treacherously like their fathers, They have been turned like a deceitful bow,

O Jehovah, deliver my soul from a lying lip, From a deceitful tongue!

What doth He give to thee? And what doth He add to thee? O deceitful tongue!