I don't think this is true. For example, the kind of God I believe in acts in accordance to the situation on the ground. (This is what I love about the OT which I think provides a very realistic notion of God who comes down from heaven to see what the sons of men are doing.)

I think many of the worst assumptions we make of God involve treating God as a human being. A human being, of course, is not just dealing with the circumstances on the ground, but is planning far in the future and sometimes makes mistakes and miscalculations in their planning. We, as human beings, naturally put our image upon God by assuming that this is what God does. Except, of course, we think it is absurd for God to make mistakes (which is where atheists will sometimes argue that God can't exist since a perfect being would never make the mistakes we see in our world--e.g., the problem of evil).

In my view, however, God does not plan or devise some sort of action. Rather, God acts by his being present in history. Once a certain threshhold is reached in the affairs of human beings, God brings judgment to bear on the universe.

Sin is an important feature of God's actions since at some point the sinfulness of humanity passes a certain threshhold, "and God sees the wickedness of man is great in the earth and repents that he made man on the earth," or by "coming down to see the city and the tower which the children of men built," or "God heard their groaning and God remembered his covenant with Abraham, with Isaac, and with Jacob."