Prayer that gave the desperate four new heart (3,6)
I believe the answer is:
our father
'prayer that' is the definition.
'our father' can be an answer for 'prayer' (I've seen this before). I'm not sure about the rest of the definition.
'the desperate four new heart' is the wordplay.
'the desperate' indicates anagramming the letters (a desperate or pathetic spelling).
'new' indicates an anagram.
'four' is an anagram of 'ourf'.
'heart' anagrammed gives 'ather'.
'ourf'+'ather'='OUR FATHER'
'gave' acts as a link.
Can you help me to learn more?
(Other definitions for our father that I've seen before include "head of family" , "Pater noster" , "God" , "Early bit of devotion" , "Lord's Prayer" .)