Travel, making for Abraham's birthplace (4)
I believe the answer is:
tour
'travel' is the definition.
(I know that tour is a type of journey)
'for abraham's birthplace' is the wordplay.
'for' becomes 'to' (eg both can mean 'in the opinion of').
'abraham's birthplace' becomes 'ur' (I can't explain this - if you can you should believe this answer much more).
'to'+'ur'='TOUR'
'making' acts as a link.
Can you help me to learn more?
(Other definitions for tour that I've seen before include "Visit a number of places" , "A sightseeing trip or journey" , "Spell of military duty" , "A trip round" , "Journey with frequent stops" .)