Francis Roberts was an influential English puritan who wrote the 1,700 page puritan magnum opus on Covenant Theology. Here are two sections from it.
The first deals with the differences between the Moral Law and the Judicial Law and upholds the viewpoint of the Westminster Confession, contra Theonomy.
The second deals with the similarities and differences between the Moral Law and Natural Law. In the midst of current discussions on the subject, here is some sanity: