Commentaries:
Jamieson, Fausset, and Brown
two or three—at one meeting (he does not add "at the most," as in I Corinthians 14:27, lest he should seem to "quench prophesyings," the most edifying of gifts), and these "one by one," in turn (I Corinthians 14:27, "by course," and I Corinthians 14:31). Paul gives here similar rules to the prophets, as previously to those speaking in unknown tongues.
judge—by their power of "discerning spirits" (I Corinthians 12:10), whether the person prophesying was really speaking under the influence of the Spirit (compare I Corinthians 12:3; I John 4:13).
Other Jamieson, Fausset, and Brown entries containing 1 Corinthians 14:29:
1 Corinthians 12:10
1 Corinthians 14:26
1 Corinthians 14:40
1 Thessalonians 5:21-22
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