Constantinian shift

Constantinian shift is used by some theologians and historians of antiquity to describe the political and theological changes that took place during the 4th-century under the leadership of Emperor Constantine the Great. Rodney Clapp claims that the shift or change started in the year 200. The term was popularized by the Mennonite theologian John H. Yoder. He claims that the change was not just freedom from persecution but an alliance between the State and the Church that led to a kind of Caesaropapism. The claim that there ever was a Constantinian shift has been disputed; Peter Leithart argues that there was a "brief, ambiguous 'Constantinian moment' in the fourth century", but that there was "no permanent, epochal 'Constantinian shift'".