17 For you most certainly give thanks well, but the other person is not built up.
1 Corinthians 14:17 Cross References - WEB
1 Corinthians 14:4
4 He who speaks in another language edifies himself, but he who prophesies edifies the assembly.
1 Corinthians 14:6
6 But now, brothers, if I come to you speaking with other languages, what would I profit you, unless I speak to you either by way of revelation, or of knowledge, or of prophesying, or of teaching?