Worship about taking till doomsday (6)
I believe the answer is:
revere
'worship' is the definition.
(I know that worship can be written as revere)
'about taking till doomsday' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'taking' indicates putting letters inside.
'till doomsday' becomes 'ever' (I've seen this in another clue).
're' enclosing 'ever' is 'REVERE'.
(Other definitions for revere that I've seen before include "Greatly admire" , "Look up to - American patriot, d. 1818" , "Honour greatly" , "Woven fabric" , "Worship, usually a deity" .)