Big stores employ people to go round their shops to experience and report back on how customers are treated;on how well or how badly staff are doing what they are supposed to do.
Well, suppose God had his own secret shoppers, people he sent to test out how well his operation on earth was working and how well those in his service were doing their jobs. Can you imagine how God must feel when he sees how his people sometimes treat each other; not in the big Christian killing Christian way but in the small everyday encounters by which most of us live out our faith!
I was talking to somebody who told me that as she was leaving church the other day, she was asked by a couple if they may go in to say a prayer, though the church was due to close. It seemed that one of the two was a Catholic but hadn't been to church for years. They were told yes, go in light a candle and pray. Now maybe they were secret shoppers; maybe God put a prompting in their hearts to pray at that moment and, on this occasion, the secret shoppers got the right response. Who knows what the long term impact might be in that particular situation. Alternatively what it might be if they had been rebuffed in any way.
Now whether or not God has his secret shoppers - and I have no doubt that God does - the important point is that how we treat others, especially in our "holy places" is crucial, not only for our own spiritual well-being, but also for the extension of God's redemptive plan. It is through such small actions that the Kingdom grows or fails to grow. It is our part of the deal. Our salvation obliges us to share in building this Kingdom and we are accountable ultimately to God for the times we build and the times when, by our attitude or response, we not only fail to build but destroy what Kingdom life may exist in those we treat badly.
Sadly, there are often other spirits than the Holy Spirit, that dictate how we behave towards each other, no less inside our church communities than outside. But, if we let the Holy Spirit be our guide then we need not fear the secret shoppers and we can get on with building the Kingdom.