Deities finish blessing (7)

I believe the answer is:

godsend

'blessing' is the definition.
(I've seen this before)

'deities finish' is the wordplay.
'deities' becomes 'gods' ('god' can be a synonym of 'deity').
'finish' becomes 'end' (synonyms).
'gods'+'end'='GODSEND'

(Other definitions for godsend that I've seen before include "Stroke of good fortune" , "The relief" , "Lucky find" , "Sudden happening that brings good fortune" , "welcome acquisition" .)

I've seen this clue in The Sun.

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