Ep 111 1Jn 4 1-3 Test the Spirits - Question Everything

I have a T-shirt which says "Question Everything" on it. I think it upset some people, but the Apostle John does say to do just that when he wrote to "test the spirits." What does that mean, why don't we do it, and HOW are we to do this?

It's life guidance that is relevant to Everyone in the clown-world we live in today.