Nuns, accepting Jesus at last, resist going awry (7)
I believe the answer is:
sisters
'nuns' is the definition.
(nuns often use the title 'sister')
'accepting jesus at last resist going awry' is the wordplay.
'accepting' is an insertion indicator (inserted letters are accepted).
'at last' suggests the final letters.
'going awry' indicates an anagram.
The last letter of 'jesus' is 's'.
'resist' is an anagram of 'siters'.
's' going within 'siters' is 'SISTERS'.
(Other definitions for sisters that I've seen before include "Nuns - nurses - siblings" , "Nuns' titles" , "Family relatives" , "Aunts may be" , "Relatives in hospital?" .)