Great Sermon! Thank you!!
I have family who believe this deception whole-heartedly. I had one person tell me I'm not saved unless I speak this modern-day gibberish and be baptised in Jesus' name only. (They believe salvation is a process.) I've known, since childhood, that this is evil and to steer clear of it.
If Jesus Himself said, "A wicked and adulterous generation seeketh after a sign; and THERE SHALL NO SIGN BE GIVEN unto it, but the sign of the prophet Jonas (Mat 16:4)," and tongues are for a sign (1 Cor 14:22), then why would anyone seek this out, except to receive some kind of fleshly "proof" that just "feels" right, rather than believing by faith? How much faith is required when they're having this experience? Where's this 'feeling' coming from? Obviously not the Holy Spirit, per Jesus.