Biblical peak (5)
I believe the answer is:
horeb
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">biblical peak</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for horeb that I've seen before include "Biblical mount" , "Mountain" .)