Albert Barnes' Notes on the Whole Bible - 1 Thessalonians 5:20
Despise not prophesyings - On the subject of prophesyings in the early Christian church, see the notes on 1 Corinthians 14:1 ff1 ff. The reference here seems to be to preaching. They were not to undervalue it in comparison with other things. It is possible that in Thessalonica, as appears to have been the case subsequently in Corinth (compare 1 Corinthians 14:19), there were those who regarded the power of working miracles, or of speaking in unknown tongues, as a much more eminent endowment... read more
The Pulpit Commentary - 1 Thessalonians 5:21
Prove all things. This exhortation is closely connected with the preceding. "Prove all things," namely, whatever was advanced by the prophets in their inspired discourses. "Prove" here means to test, as metals are tested in the fire; and hence the word frequently denotes the favorable result of the testing, or approval. There was a special gift of discerning spirits in the primitive Church ( 1 Corinthians 12:10 ; 1 Corinthians 14:29 ). But although the words primarily refer to the... read more