With which to welcome honest members (4,4)
I believe the answer is:
open arms
'with which to welcome' is the definition.
I know nothing about this answer so I cannot judge whether it can be defined by this definition.
'honest members' is the wordplay.
'honest' becomes 'open' (similar in meaning).
'members' becomes 'arms' (arm is a kind of member).
'open'+'arms'='OPEN ARMS'
Can you help me to learn more?
(Other definitions for open arms that I've seen before include "With which to offer hearty welcome" , "Pans Rome (anag.)" , "Welcoming attitude" , "welcome wiyh....,....greet warmly" , "Welcome with . . . . . . . . , a warm uninhibited greeting" .)