Repeats Easter rite in new arrangement (10)
I believe the answer is:
Here is my best explanation:
'repeats' is the definition.
('reiterate' can be a synonym of 'repeat')
'easter rite in new arrangement' is the subsidiary indication.
'in new arrangement' indicates anagramming the letters (I've seen this in other clues).
'easterrite' is an anagram of 'reiterates'.
(Another definition for reiterates that I've seen is "Says again".)