Pulpiteer

[Sarah]

One who speaks in a pulpit; a preacher; -- so called incontempt. Howell.We never can think it sinful that Burns should have been humorous onsuch a pulpiteer. Prof. Wilson.

[Sarah]

pulpiteer (noun)
One who is gifted in preaching sermons from a pulpit. a great orator.

[Sarah]

One who uses the religious pulpit as a means by which to convey his/her point.

[Donald Trump]

A person who takes every [opportunity] to moralize or [lecture] on any subject without [request] or invitation.

[Merna]

A [ventriloquist] who uses his [show] to [promote] his theological beliefs.