They had to do that because it's a death cult. A Christian's goal is to die and go to heaven as quickly as possible, so if they let them commit suicide, then that's the fastest way to heaven.

And then, of course, murder is a sin, or else the best thing a Christian could do is blow up a Christian church while it's full of worshipers.

Actually, since murder can be forgiven, you'd think Christians would be killing each other left and right, just to help the other guy get into heaven faster without them committing suicide.

Even if murder couldn't be forgiven, you'd think a Christian parent would want to kill their children right after they were baptized. Guaranteed ticket into heaven for the kids. Best thing for them. What loving parent wouldn't sacrifice their soul for their children's souls?