Understand a Catholic church point (6)

I believe the answer is:

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'understand' is the definition.
(I know that understand is a kind of accept)

I cannot understand how the rest of the clue works.

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(Other definitions for accept that I've seen before include "Believe to be correct; take on" , "Welcome" , "Reply in the affirmative" , "Receive something proffered" , "Acknowledge" .)

I've seen this clue in The Times and The Sunday Times.

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