Hymn may make one feel it as deeds unfolded (6,7)
I believe the answer is:
adeste fideles
'hymn' is the definition.
(I've seen this before)
'feel it as deeds unfolded' is the wordplay.
'unfolded' indicates anagramming the letters (I've seen this in other clues).
'feel'+'it'+'as'+'deeds'='feelitasdeeds'
'feelitasdeeds' anagrammed gives 'ADESTE FIDELES'.
'may make one' is the link.
(Other definitions for adeste fideles that I've seen before include "O Come, all ye Faithful" , "Seasonal music" , "Hymn" .)