Need to rearrange the garden (4)
I believe the answer is:
eden
'garden' is the definition.
(Garden of Eden in the Bible)
'need to rearrange' is the wordplay.
'to rearrange' is an anagram indicator (I've seen 'rearranged' mean this).
'need' is an anagram of 'EDEN'.
'the' acts as a link.
(Other definitions for eden that I've seen before include "Place of unspoiled beauty" , "Genesis location" , "The most enchanting garden of all" , "Adam and Eve home" , "heavenly spot" .)