Goes on to say more to theologian in South Africa on reflection (4)
I believe the answer is:
adds
'goes on to say' is the definition.
(I've seen this in another clue)
'theologian in south africa on reflection' is the wordplay.
'theologian' becomes 'DD' (Doctor of Divinity degree).
'in' indicates putting letters inside.
'south africa' becomes 'sa' (abbreviation).
'on reflection' says the letters should be written in reverse.
'dd' put within 'sa' is 'sdda'.
'sdda' in reverse letter order is 'ADDS'.
'more to' acts as a link.
This may not be correct. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for adds that I've seen before include "Puts (numbers) together" , "Goes on to say" , "Appends or increases" , "Aggregates or makes further remark" , "Appends; Totals" .)