I can see it being used as an illustration, just like pastors have used the analogy that "just because you live in a garage does not make you a car"
when illustrating the point that not all church attendees are Christians. I have no problem with it being used in that context. If, however it becomes
a substitute for the message, then, yes, I would have problems.
FWIW I have purchased Fidget Spinners for two of my Grandchildren, one of them is only a two pronged device, so the analogy would fall down right there.
Not sure how this response ended up here, so have deleted it this is just me deleting it.
The best way to describe the Triune God is the language of historic Christian orthodoxy, with a plain and clear explanation of what the terms mean,
and with Scriptural texts which make the points which the doctrine summarizes.
The device is a bad illustration, because it does not make the doctrine more clear. It requires another layer of explanation to identify where it is wrong as an illustration.
Depends who the explanation is for scholar. And, as you have not seen it being used you don't know how good an illustration it was for the target audience. Perhaps the three parts blend into one when spun showing how God is God and that works for young people.
Sometimes, Scholar, If you take things too literally, you miss the point of the message. Jesus, himself, used parables (stories) to illustrate a point, and, at no time, did he indicate that they were meant to be taken literally.
Scholar is literally indoctrinated though. There is a saying here, "That wouldn't set the heather on fire" meaning it wouldn't be very exciting.
Young people crave excitement even in church. Next time they played with their own spinner they may well remember the sermon, whatever it was.
I've listened to one of your sermons scholar - setting the heather on fire isn't really your thing.
I went to the Church of the Nazarene when I was growing up. I still remember one children's bit where the good looking apple ( or was it a banana?) was rotten inside whereas the less shiny, attractive looking one was perfect. It was, for me, the perfect illustration about what God wanted - not the show, but the substance of a life.
And yet, young folk are turning away from the church in droves. We have religious assemblies at work once a term because they are a legal obligation
in Scotland. The local clergy take it in turns as we are non-denominational. Only a couple of assemblies have been right for the target audience.
Mostly, teenagers endure rather than engage and want to discuss the ideas afterwards.
You need a completely different way in for young learners and once in can give them your version of whatever version of Christianity you espouse. Crumblies don't want fidget spinners but young folk respond to the dab, the spinner, the bottle of water flip. They want to know they are understood before they take the time to understand you.
I won't put up the link, but you can. (It might not still be available anyway) but one of your cover-pastor churches put up a podcast of your sermon. Folk here could easily listen to you reeling them in.
I believe that God is in all things - people, nature, animals and, yes, even fidget spinners !