1 Corinthians 14:2-5

2For one who speaks in an unknown tongue does not speak to people but to God; for no one understands him or catches his meaning, but by the Spirit he speaks mysteries [secret truths, hidden things].

3But [on the other hand] the one who prophesies speaks to people for edification [to promote their spiritual growth] and [speaks words of] encouragement [to uphold and advise them concerning the matters of God] and [speaks words of] consolation [to compassionately comfort them].

4One who speaks in a tongue edifies himself; but one who prophesies edifies the church [promotes growth in spiritual wisdom, devotion, holiness, and joy].

5Now I wish that all of you spoke in unknown tongues, but even more [I wish] that you would prophesy. The one who prophesies is greater [and more useful] than the one who speaks in tongues, unless he translates or explains [what he says], so that the church may be edified [instructed, improved, strengthened].