Preacher (10)
I believe the answer is:
evangelist
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">preacher</span>' is the definition.<br/ ><span class="explanation-format__explanation">(an evangelist spreads or preaches their religion)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for evangelist that I've seen before include "Zealous believer" , "Mark for one" , "Gospel spreader" , "Zealous advocate" , "Preacher" .)