'Speak with Tongues' in the Bible

For they heard them speak with tongues, and magnify God. Then answered Peter,

Have all the gifts of healing? Do all speak with tongues? Do all interpret?

Even so, likewise, when ye speak with tongues, except ye speak words that have signification, how shall it be understood what is spoken? For ye shall but speak in the air.

I thank my God, I speak with tongues more than ye all.

If therefore when all the congregation is come together, and all speak with tongues, there come in they that are unlearned, or they which believe not: will they not say that ye are out of your wits?

If any man speak with tongues, let it be two at once - or at the most three at once - and that by course, and let another interpret it:

Wherefore, brethren, covet to prophesy, and forbid not to speak with tongues.