All you need. Nothing you don't.
I was thinking today about the number of films and tv shows which had the catholic confessional somewhere in the plot. Several which I’ve viewed over the years used the theme of a priest who had incriminating evidence but could not divulge it, having received it in the confessional stall.
Scripture does encourage us to confess our faults one to another. This invites humility and seems to fit with the closeness which can come by meeting in homes. Yet this very same text is used by modern priests who offer confessionals as part of their services. Have they gone too far in so doing? Yes, they have.
James 5:16 Therefore confess your sins to each other and pray for each other so that you may be healed. The prayer of a righteous man is powerful and effective.
Speaking of confessions, have you ever noticed how quickly we are to admit we a sinners *in general* but if and when it comes to admitting a specific sin, some – particularly we of the male gender – would rather die a thousand deaths than just “fess up?”