Repent day after rage (3,3,5)
I believe the answer is:
see the light
'repent' is the definition.
I don't know anything about this answer so I cannot judge whether it can be defined by this definition.
'day after rage' is the wordplay.
I cannot really see how this works, but
'day' could be 'light' (I've seen this in other clues) and 'light' is present in the answer.
'rage' could be 'seethe' (I've seen this before) and 'seethe' is found in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for see the light that I've seen before include "Gain sudden understanding" , "Realise one's mistake" , "Realise the error of one's ways" , "get it?" , "Become converted" .)