Prefer the first of the Prophets in the Old Testament (3)
I believe the answer is:
opt
'prefer' is the definition.
(I've seen this in another clue)
'first of the prophets in the old testament' is the wordplay.
'first of' suggests taking the first letters.
'in the' is an insertion indicator.
'old testament' becomes 'ot'.
The first letter of 'prophets' is 'p'.
'p' put into 'ot' is 'OPT'.
'the' is the link.
(Other definitions for opt that I've seen before include "Hold in the highest esteem" , "Choose from pot" , "Prefer, choose" , "Pick from pot" , "Make a choice" .)