1 Corinthians 14:3, 19, 35

On the other hand, the one who prophesies speaks to people for their upbuilding and encouragement and consolation.

Nevertheless, in church I would rather speak five words with my mind in order to instruct others, than ten thousand words in a tongue.

If there is anything they desire to learn, let them ask their husbands at home. For it is shameful for a woman to speak in church.