Able regularly to visit church and pray (7)
I believe the answer is:
beseech
'pray' is the definition.
(beseech can mean to pray or beg)
'able regularly to visit church' is the wordplay.
'regularly' indicates alternate letters (regularly take one letter, leave next etc.).
'to visit' becomes 'see' (seeing is a kind of visiting).
'church' becomes 'ch' (common abbreviation).
The alternate letters of 'able' are 'be'.
'be'+'see'+'ch'='BESEECH'
'and' acts as a link.
(Other definitions for beseech that I've seen before include "petition" , "Request earnestly" , "wood" , "Fervently ask (someone) for something" , "Sue" .)