1 Corinthians 14:29

And let the prophets, two or three, speak, and the others judge.

1 Corinthians 12:10

and to another, workings of mighty deeds; and to another, prophecy; and to another, discerning of spirits; to another, various kinds of tongues; and to another, interpretation of tongues.

1 Corinthians 14:39

So then, my brethren, desire earnestly to prophesy, and forbid not to speak with tongues.

1 Thessalonians 5:19-21

Quench not the Spirit.

1 John 4:1-3

Beloved, believe not every spirit, but try the spirits, whether they are of God; because many false prophets have gone forth into the world.

Treasury of Scripture Knowledge

Summary

Let the prophets speak two or three, and let the other judge.

Bible References

The prophets

1 Corinthians 14:39
So then, my brethren, desire earnestly to prophesy, and forbid not to speak with tongues.
1 Corinthians 12:10
and to another, workings of mighty deeds; and to another, prophecy; and to another, discerning of spirits; to another, various kinds of tongues; and to another, interpretation of tongues.
1 Thessalonians 5:19
Quench not the Spirit.
1 John 4:1
Beloved, believe not every spirit, but try the spirits, whether they are of God; because many false prophets have gone forth into the world.

General references

1 Corinthians 14:32
And spirits of prophets are subject to prophets;
1 Thessalonians 5:20
Despise not prophesyings;