Parallel
Jeremiah 9:4
Brenton's English Septuagint · Berean Standard Bible
Every one will mock his friend; they will not speak truth: their tongue has learned to speak falsehoods; they have committed iniquity, they ceased not, so as to return.
9:5
Each one betrays his friend; no one tells the truth. They have taught their tongues to lie; they wear themselves out committing iniquity.