Never dismiss Speaking in tongues as just babbling/gibberish

My wife repented and got baptized. She did not know about speaking in tongues. But when she got out of the water, she bursted in tongues.

The bible describes the unforgiveable sin as misattributing the works of the Holy Spirit to someone or something else.

The safest way to dismiss something supernatural is just by saying “I don’t know if that is from the Holy Spirit or not” and not say that person is just babbling.