{4} There are, it may be, so many kinds of voices in the world, and none of them is without signification.

(4) He proves that interpretation is necessarily to be joined with the gift of tongues, by the manifold variety of languages, insomuch that if one speak to another without an interpreter, it is as if he did not speak.

People's New Testament

14:10 There are, it may be, so many kinds of voices in the world. Articulate language spoken and understood by some men.

Jamieson-Fausset-Brown Bible Commentary

10. it may be-that is, perhaps, speaking by conjecture. "It may chance" (1Co 15:37).

so many-as may be enumerated by investigators of such matters. Compare "so much," used generally for a definite number left undefined (Ac 5:8; also 2Sa 12:8).

kinds of voices-kinds of articulate speech.

without signification-without articulate voice (that is, distinct meaning). None is without its own voice, or mode of speech, distinct from the rest.

Matthew Henry's Concise Commentary

14:6-14 Even an apostle could not edify, unless he spoke so as to be understood by his hearers. To speak words that have no meaning to those who hear them, is but speaking into the air. That cannot answer the end of speaking, which has no meaning; in this case, speaker and hearers are barbarians to each other. All religious services should be so performed in Christian assemblies, that all may join in, and profit by them. Language plain and easy to be understood, is the most proper for public worship, and other religious exercises. Every true follower of Christ will rather desire to do good to others, than to get a name for learning or fine speaking.