'Speak with Tongues' in the Bible

have all gifts of healings? do all speak with tongues? do all interpret?

Now I would have you all speak with tongues, but rather that ye should prophesy: and greater is he that prophesieth than he that speaketh with tongues, except he interpret, that the church may receive edifying.

I thank God, I speak with tongues more than you all:

If therefore the whole church be assembled together and all speak with tongues, and there come in men unlearned or unbelieving, will they not say that ye are mad?

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