At meetings when individuals are droning on about how important the preaching work is, we are saving lives, angels in midheaven are helping us, etc., I have a stock answer.
I talk about all the wonderful encouraging and faith-building experiences we hear of individuals praying to Jehovah for help, and, amazingly, a Jehovah's Witness shows up at their door! What does that tell us? That Jehovah saw these people, recognized them as sheep, listened to them and answered their prayers. So sometimes His sheep are Jehovah's Witnesses, and sometimes they are not! But, how comforted we can be that Jehovah already knows where each and everyone of his sheep resides.
Usually the brothers on the platform looks at me puzzled. They seem to understand what I just said, but I couch it in so much JW jargon, it confuses them.