Care for Faith (5)
I believe the answer is:
trust
I believe this is a double definition.
'care' is the first definition.
(thesaurus)
'faith' is the second definition.
('trust' can be a synonym of 'faith')
'for' is the link.
(Other definitions for trust that I've seen before include "Firm belief (in someone)" , "Faith - guardianship - after 10, the owners of the Guardian" , "assurance" , "Hope, expect" , "Have faith or confidence in reliability of" .)