Marcion of Sinope developed the ditheistic system of belief (the notion of one high god and one lower god) in 144, and he entirely opposed the Tanakh.
Marcion responded by developing a ditheistic system of belief around the year 144. For example, a ditheistic system could be one in which one god is a creator and the other a destroyer. In contrast to other leaders of the nascent Christian Church, however, Marcion declared that Christianity was in complete discontinuity with Judaism and entirely opposed to the Tanakh. 
