Tolerant father to draw on New Testament (7)
I believe the answer is:
patient
'tolerant' is the definition.
(associated in meaning)
'father to draw on new testament' is the wordplay.
'father' becomes 'pa' (pa can mean dad or father).
'to draw' becomes 'tie' (synonyms).
'on' is a charade indicator (letters next to each other).
'new testament' becomes 'nt'.
'pa'+'tie'+'nt'='PATIENT'
(Other definitions for patient that I've seen before include "Long-suffering - person in hospital" , "Calm" , "Willing to wait" , "One receiving medical care" , "One receives medical care" .)