ERASTIANISM Named after Thomas Erastus (1524–1583), a Swiss theologian who set forth his views in his Explicatio Gravissimae Quaestionis (1589), Erastianism is the opposite of that theocratic system that held sway in Europe for the thousand years after Constantine, in which the state became more and more subjugated to the church until in many ways the church ruled the state. The advocate of the Erastian form of church government contends that it is the right and function of the state to rule over