Golden Rule word (3)
'golden rule word' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for unto that I've seen before include "'The Lord said . . . . Moses'" , "Biblical preposition, the archaic 'to'" , "'Do ... others, etc.'" , "'''For ... us a child is born'' (Handel's Messiah) (4)'" , "Heading for" .)
(Other definitions for you that I've seen before include "Neither me, nor him" , "whoever's reading this" , "Second person pronoun" , "My solvers in general" , "Anyone" .)