This verse describes the deliberate, premeditated nature of certain evil: eyes closed to think, lips moving to execute. This is not accidental wrongdoing — it is calculated wickedness. The picture makes it clear that sin here is intentional, not a stumble but a scheme.
Memory phrase: Sin planned is very serious.
Talk about it: What is the difference between making a mistake and planning to do something wrong?
Prayer: God, keep my mind from scheming evil.