I would suggest instead that what was still is, and what is not never was. God’s promise in Exodus 20 is not that He will send fresh judgment against one generation for the sins of another generation. God does not have beside His throne a box full of thunderbolts that He hurls down on sinners. Much less does He hurl down thunderbolts against someone’s great grandchildren. The consequences of our sin are much more organic than that, as are the results of our obedience.