1 Corinthians 14:19

howbeit in the church [congregation] I had rather speak five words with my understanding [so as to be understood], that I might instruct others also, than ten thousand words in a tongue. [Paul was thankful for the gift of tongues because of its utility, but especially lest any should think that he disparaged the gift because he did not have it, and assigned it a subordinate place from envy. His disparagement is most emphatic. "Rather half of ten of the edifying sort than a thousand times ten of the other," says Besser. "There is a lesson here," says Johnson, "to preachers who are so learned in their utterances that the people can not understand them."]