Ephesians' place in the New Testament (5)
I believe the answer is:
tenth
'ephesians' place in the new testament' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tenth that I've seen before include "Decimal part?" , "Tithe proportion" , "Ordinal number" , "(Decimal?) fraction" , "0.1" .)