Publication covering travel in Biblical land (5)
I believe the answer is:
magog
'biblical land' is the definition.
The definition suggests a singular noun which matches the answer.
'publication covering travel' is the wordplay.
'publication' becomes 'mag' (abbreviation for magazine).
'covering' is an insertion indicator.
'travel' becomes 'go' (synonyms).
'mag' placed around 'go' is 'MAGOG'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for magog that I've seen before include "Gog and -, City of London guardian giants" , "Gog's companion" , "old giant" , "Last of two old giants" , "Biblical king" .)