Watch the sequence. First a man lies, then he departs, and the departure is the consequence of the lie. Falsehood is not a single misstep but a road that leads steadily away from the ground you were standing on.
And the deepest corruption begins in the heart before it reaches the tongue. A person conceives the falsehood inwardly, entertains it, lets it settle, and only then speaks it as oppression against others. The chaos in a society is the accumulation of small betrayals of the truth, each spoken by someone who knew better. Guard what you say, because your words build the world you then have to live inside.