Holy crib has not as much to tuck in (7)

I believe the answer is:

blessed

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'holy' is the definition.
(similar in meaning)

'crib has not as much to tuck in' is the wordplay.
'crib has' becomes 'bed' (I am not sure about this - if you are sure you should believe this answer much more).
'not as much' becomes 'less' (similar in meaning).
'to tuck in' is an insertion indicator.
'bed' placed around 'less' is 'BLESSED'.

Can you help me to learn more?

(Other definitions for blessed that I've seen before include "Made lucky - made holy" , "in heaven" , "Consecrated" , "darned" , "Endowed" .)

I've seen this clue in The Sun.

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