1 Corinthians 14:22

Therefore tongues are for a sign, not to them that believe, but to them that believe not: but prophesying serves not for them that believe not, but for them that believe.

Mark 16:17

And these signs shall follow them that believe; In my name shall they cast out demons; they shall speak with new tongues;

1 Corinthians 14:1

Follow after love, and desire spiritual gifts, but rather that you may prophesy.

Acts 2:6-12

Now when this was sounded abroad, the multitude came together, and were confounded, because every man heard them speak in his own language.

Acts 2:32-36

This Jesus has God raised up, of which we all are witnesses.

Knowing this, that the law is not made for a righteous man, but for the lawless and disobedient, for the ungodly and for sinners, for unholy and profane, for murderers of fathers and murderers of mothers, for manslayers,

Treasury of Scripture Knowledge

Summary

1 Corinthians 14:22

Wherefore tongues are for a sign, not to them that believe, but to them that believe not: but prophesying serveth not for them that believe not, but for them which believe.