Complete set of religious books found in Ireland (6)
I believe the answer is:
entire
'complete set' is the definition.
'entire' can be an answer for 'complete' (I've seen this in another clue). I am unsure of the 'set' bit.
'religious books found in ireland' is the wordplay.
'religious books' becomes 'NT' (New Testament).
'found in' is an insertion indicator.
'ireland' becomes 'eire' (poetic name for Ireland).
'nt' placed into 'eire' is 'ENTIRE'.
'of' acts as a link.
Can you help me to learn more?
(Other definitions for entire that I've seen before include "excluding nothing" , "in one piece" , "Whole - undamaged" , "Unharmed - total" , "everything" .)