3 occurrences in 3 dictionaries

Reference: DISCERNING OF SPIRITS

American

1Co 12:10, a miraculous gift of the Holy Ghost to certain of the early church, empowering them to judge of the real character of those who professed to love Christ, and to be inspired to teach in his name, 1Jo 4:1; 2Jo 1:7. Compare Ac 5:1-10; 13:6-12.

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Fausets

1Co 12:10. Discerning between the operation of God's Spirit and that of the evil spirit, or unaided human spirit claiming to utter the dictates of God's Spirit. Ac 5:1-11; 8:28; 1Co 14:23,37: "if any man think himself to be a prophet or spiritual, let him acknowledge that the things that I write unto you are the commandments of the Lord." It is this which assures us of the inspiration of the New Testament The books were accepted as inspired, by churches having men possessing" the discerning of spirits" (1Jo 4:1; 1Ti 4:1).

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Morish

This was one of the gifts in the early church, needful for 'testing the spirits,' because even then many false prophets had gone forth into the world. 1Co 12:10; 1Jo 4:1-3. This gift was especially necessary at the time when the word of God was not fully written.

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