Miracle man in jail he rebuilt (6)
I believe the answer is:
elijah
'miracle man' is the definition.
'Elijah' can be an answer for 'man'. I'm not certain of the 'miracle' bit.
'jail he rebuilt' is the wordplay.
'rebuilt' is an anagram indicator.
'jail'+'he'='jailhe'
'jailhe' with letters rearranged gives 'ELIJAH'.
'in' is the link.
Can you help me to learn more?
(Other definitions for elijah that I've seen before include "Biblical prophet" , "Hebrew prophet who rebuked Ahab and Jezebel" , "he prophesied" , "Mendelssohn oratorio" , "Hebrew prophet in the time of Jezebel" .)