You're delivering a sermon. As you do every week. A few days are reserved, like a catholic school chooses to go to church on Wednesday, Thursdays and weekends are chosen. Being unavailable to attend is sometimes excusable, under the right circumstances, hence the other two or so days where you can attend to make up not being there.

a new member, Thomas, has joined your cult. He is yet to gain complete initiation into it, but has attended your preaching for today. Little do you or the other members know, he's undercover. An investigator who decided that if he wanted it done, he'd do it himself. He has a listening device on him, recording what he and others say amongst us.