""Religious practice'' is a very ''loaded term''.
It's JW tone can mean a variety of things to practicing unbiblical things like shunning,, a deadly blood policy,, harmful 2 witness rule.
A not so secret ''Sheppard the Flock of God'' book is one of them. I'd be hard-pressed to see any such directive about secret boxes or ''secret edlers" manuals in the bible.
'''religious practice'' can be applied to myriad of JW terms, loaded language.