Bachelor edited psalm -- it related to religious ceremony (9)

I believe the answer is:

baptismal

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'related to religious ceremony' is the definition.
I can't tell whether this definition defines the answer.

'bachelor edited psalm it' is the wordplay.
'bachelor' becomes 'BA' (the qualification: Bachelor of Arts).
'edited' is an anagram indicator.
'psalm'+'it'='psalmit'
'psalmit' is an anagram of 'ptismal'.
'ba'+'ptismal'='BAPTISMAL'

Can you help me to learn more?

(Other definitions for baptismal that I've seen before include "church service" , "Relating to the rite of admission to the Christian Church" .)

I've seen this clue in The Telegraph.

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