1 John 4:1 Beloved, do not believe every spirit,

but test the spirits to see whether they are from God,

because many false prophets have gone out into the world.

How many books, devotionals, blogs, or podcasts, for that matter, begin with the notion that one should test the spirit that provides its origin?

John is issuing an invitation for you to engage in that very pursuit.  And that includes what you are hearing or reading right now.