'As Good as Dead' in the Bible

Those who devise sinful plans are as good as dead, those who dream about doing evil as they lie in bed. As soon as morning dawns they carry out their plans, because they have the power to do so.

This is what the Lord says: "The prophets who mislead my people are as good as dead. If someone gives them enough to eat, they offer an oracle of peace. But if someone does not give them food, they are ready to declare war on him.