Metal, type likely hollow and portable, for work in church (4,6,5)
I believe the answer is:
lead kindly light
'work in church' is the definition.
(Lead, Kindly Light is a hymn)
'metal type likely hollow and portable' is the wordplay.
I cannot quite understand how this works, but
'metal' could be 'lead' (lead is a kind of metal) and 'lead' is located in the answer.
'type' could be 'kind' (I've seen this before) and 'kind' is found in the answer.
'portable' could be 'light' (I've seen this before) and 'light' is found within the answer.
This explanation may well be incorrect...
'for' is the link.
(Another definition for lead kindly light that I've seen is " hymn".)