The most common and most likely answer to this crossword clue is the 6 letter word ELIJAH
I've seen this crossword clue in The Times
E
L
I
J
A
H
More clues leading to the result ELIJAH
- Robust defending judge, one revolutionary prophet
- High priest takes pilgrimage up for prophet
- What secures jail break for miracle worker?
- Oratorio by Mendelssohn, I judge, in sound being revolutionary
- Prophet in jail? He’s upset!
- Prophet and pilgrim the French sent to heaven
- One Biblical guy or another is with God
- A miracle-man, he’s involved in jailbreak
- A prophet, he is involved with jail-break
- He was involved in jailbreak in biblical times
Buddy explains!

The straight part
We know that "Hebrew prophet" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case hebrew prophet = elijah.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.