For he who speaks in a tongue does not speak to men, but to God. Indeed, no one understands him; he utters mysteries in the Spirit.

Mark 16:17
And these signs will accompany those who believe: In My name they will drive out demons; they will speak in new tongues;

1 Corinthians 12:10
to another the working of miracles, to another prophecy, to another distinguishing between spirits, to another speaking in various tongues, and to still another the interpretation of tongues.

1 Corinthians 12:28
And in the church God has appointed first of all apostles, second prophets, third teachers, then workers of miracles, and those with gifts of healing, helping, administration, and various tongues.

1 Corinthians 13:1
If I speak in the tongues of men and of angels, but have not love, I am only a ringing gong or a clanging cymbal.

1 Corinthians 13:2
If I have the gift of prophecy and can fathom all mysteries and all knowledge, and if I have absolute faith so as to move mountains, but have not love, I am nothing.

1 Corinthians 14:18
I thank God that I speak in tongues more than all of you.

1 Corinthians 14:26
What then shall we say, brothers? When you come together, everyone has a psalm or a teaching, a revelation, a tongue, or an interpretation. All of these must be done to build up the church.

1 Corinthians 14:27
If anyone speaks in a tongue, two, or at most three, should speak in turn, and someone must interpret.

For he that speaks in an unknown tongue speaks not to men, but to God: for no man understands him; however, in the spirit he speaks mysteries.