God has been providentially working to return his people from exile, working in the heart of pagan kings and the heart of his covenant people. His faithfulness to his covenant includes a return to the true covenant worship of the covenant God, raising a man to lead his covenant people to return to the Law in the covenant city. Indeed, without studying, doing and teaching the Law, and for us today the gospel, true worship will often falter and give way to fallacies and idolatry.