Saint entering Eastern building finding something he wrote? (7)
I believe the answer is:
epistle
'something he wrote?' is the definition.
Although both the answer and definition are singular nouns, I don't understand how they can define each other.
'saint entering eastern building' is the wordplay.
'saint' becomes 'st' (abbreviation).
'entering' is an insertion indicator.
'eastern' becomes 'e'.
'building' becomes 'pile' (I've seen this before).
'e'+'pile'='epile'
'st' going within 'epile' is 'EPISTLE'.
'finding' is the link.
(Other definitions for epistle that I've seen before include "a for instance" , "Letter, in the Bible perhaps" , "Specially long and formal letter" , "one from Paul?" , "Apostolic letter" .)