John Calvin on 1 Corinthians 14:19

19. I would rather speak five words. This is spoken hyperbolically, unless you understand five words, as meaning five sentences. Now as Paul, who might otherwise have exulted loftily in his power of speaking with tongues, voluntarily abstains from it, and, without any show, aims at edification exclusively, he reproves, by this means, the empty ambition of those, that are eagerly desirous to show themselves off with empty tinkling. (1 Corinthians 13:1.) The authority of the Apostle ought, also, to have no little weight in drawing them off from vanity of this kind.