Eternal, without finish (7)
I believe the answer is:
endless
This clue is a double definition.
'eternal' is the first definition.
(I know that eternal can be written as endless)
'without finish' is the second definition.
('finish' can be 'end' (come to an end) so maybe 'without finish' can be ''endless')
(Other definitions for endless that I've seen before include "Going on and on, interminable" , "Sister of Aaron (Exodus)" , "Going on forever, lacking conclusion" , "Continuous - eternal - incessant" , "'Eternal, perpetual (7)'" .)