Israel's judge sounds a dizzy one (6)
I believe the answer is:
gideon
'israel's judge' is the definition.
(biblical figure)
'sounds a dizzy one' is the wordplay.
'sounds' becomes 'gid' (I can't justify this - if you can you should give a lot more credence to this answer).
'a dizzy' is an anagram indicator.
'one' is an anagram of 'eon'.
'gid'+'eon'='GIDEON'
(Other definitions for gideon that I've seen before include "Israel judge; hotel bible" , "Israelite hero" , "Hebrew judge - hotel Bible" , "old judge" , "Israelite leader; I'd gone (anag.)" .)