1) Theologian 2) Theologiser 3) Theologist 4) Theologizer 
lover of the past
• (n.) One whose chief interest is in the past; one who regards the past with most pleasure or favor. • (n.) One who believes the prophecies of the Apocalypse to have been already fulfilled.
Pret'er·ist noun [ Prefix preter- + -ist .] 1. One whose chief interest is in the past; one who regards the past with most pleasure or favor. 2. (Theol.) One who believes the prophecies of the Apocalypse to have been already fulfilled. Farrar. 
[n] - a theologian who believes that the prophecies of the Apocalypse have already been fulfilled
noun a theologian who believes that the Scripture prophecies of the Apocalypse (as in the Book of Revelations) have already been fulfilled