Brother of Cain and Seth (4)
I believe the answer is:
abel
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">brother of cain and seth</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for abel that I've seen before include "Old Testament brother" , "Brother killed by Cain" , "Cain's victim; - Magwitch (Great Expectations)" , "character in the Bible" , "one killed early" .)