Stole books collected by bloke (6)
I believe the answer is:
Here is my best explanation:
'stole' is the definition.
(both are a type of cloak)
'books collected by bloke' is the wordplay.
'books' becomes 'nt' (New Testament).
'collected by' means one lot of letters goes inside another.
'bloke' becomes 'male'.
'nt' placed inside 'male' is 'MANTLE'.
(Other definitions for mantle that I've seen before include "Shelf over a fireplace", "Cloak or loose outer garment", "Outer garment", "Layer below earth's crust", "Gas lamp part; cloak", "Lament in loose cloak", "Loose cloak, shawl", "A cloak in which to lament", "Cloak and shelf over the fireplace" and "Loose outer garment or covering".)