For the things that are done by them in secret, it is a shame even to speak of.
For it is a shame even to speak of those things which are done of them in secret.
For it is a shame even to speak of or mention the things that [such people] practice in secret.
for the things which are done by them in secret it is a shame even to speak of.
It’s embarrassing to even talk about what certain persons do in secret.
For the things that are done by them in secret are shameful, even to mention.