Acts 2:4

4And they were all afilled with the Holy Spirit and began bto speak in other tongues cas the Spirit gave them utterance.

Acts 2:11

11both Jews and dproselytes, Cretans and Arabians—we hear them telling in our own tongues the mighty works of God.”

Acts 19:6

6And ewhen Paul had laid his hands on them, the Holy Spirit came on them, and fthey began speaking in tongues and gprophesying.

1 Corinthians 14:20-25

20Brothers, hdo not be children in your thinking. iBe infants in evil, but in your thinking be jmature. 21 kIn the Law it is written, lBy people of strange tongues and by the lips of foreigners will I speak to this people, and even then they will not listen to me, says the Lord.” 22Thus tongues are a sign not for believers but for unbelievers, while prophecy is a sign
Greek lacks  a sign
not for unbelievers but for believers.
23If, therefore, the whole church comes together and all speak in tongues, and outsiders or unbelievers enter, nwill they not say that you are out of your minds? 24But if all prophesy, and an unbeliever or outsider enters, he is convicted by all, he is called to account by all, 25 othe secrets of his heart are disclosed, and so, pfalling on his face, he will worship God and qdeclare that God is really among you.

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