Is Israel taken in by RC saint's converter? (10)
I believe the answer is:
missionary
'saint's converter?' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.
'is israel taken in by rc' is the wordplay.
'israel' becomes 'sion' (I've seen this in other clues).
'taken in by' indicates putting letters inside.
'rc' becomes 'mary' (I can't explain this - if you can you should give a lot more credence to this answer).
'is'+'sion'='ission'
'ission' inserted inside 'mary' is 'MISSIONARY'.
Can you help me to learn more?
(Other definitions for missionary that I've seen before include "one spreading the word" , "Evangelist" , "Related to proselytising" , "Faithful worker" , "regular position" .)