So while Theonomy doesn`t have to be postmillenial in its eschatology as a general rule the founders of the system did hold to that view and attributed their view of the civil law as finding its fulfilment in the postmillenial eschatology.

Peter

If you believe what you like in the gospels, and reject what you don't like, it is not the gospel you believe, but yourself. Augustine of Hippo