NET
9 For they do not speak the truth; their stomachs are like the place of destruction, their throats like an open grave, their tongues like a steep slope leading into it.
Darby
9 For there is no certainty in their mouth; their inward part is perversion, their throat is an open sepulchre; they flatter with their tongue.
KJV
9 For [there is] no faithfulness in their mouth; their inward part [is] very wickedness; their throat [is] an open sepulchre; they flatter with their tongue.