Question: What does it mean to “test the spirits” according to 1 John 4:1-3?

Question: What does it mean to “test the spirits” according to 1 John:4:1-3 [1] Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world. [2] Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God: [3] And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
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Response: The usual interpretation has a would-be exorcist demanding of an evil spirit (apparently in possession of a victim) whether Christ has come in the flesh. However, this scripture has nothing to do with exorcism or conversing with evil spirits, but with identifying false prophets and their false teaching. Already in John’s day there were “many false prophets,” and John is declaring that false prophets are inspired by deceiving spirits.

In 1 Kings:22:22And the Lord said unto him, Wherewith? And he said, I will go forth, and I will be a lying spirit in the mouth of all his prophets. And he said, Thou shalt persuade him, and prevail also: go forth, and do so.
See All..., such a spirit is given permission by God to be “a lying spirit in the mouths” of Israel’s prophets: one spirit speaks falsely through four hundred prophets to deceive King Ahab (“there was none like unto Ahab, which did sell himself to work wickedness”—21:25) in order to bring about his death in fulfillment of the true prophecy by Elijah.

At issue is an important doctrine: that Jesus Christ has come once and for all in the flesh, fulfilling His mission in one life on earth, one sacrifice on the cross, and one resurrection. Thus two related false teachings are refuted: reincarnation and transubstantiation. The body of flesh that Christ took (“a body hast thou prepared [for] me” —Hebrews:10:5Wherefore when he cometh into the world, he saith, Sacrifice and offering thou wouldest not, but a body hast thou prepared me:
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He came in the flesh once for all time when He was born as a babe in Bethlehem; He does not come again and again in the flesh as priests transmute bread into His body. A lying spirit authored both of these deceitful doctrines, which are among the “doctrines of devils” (1 Timothy:4:1Now the Spirit speaketh expressly, that in the latter times some shall depart from the faith, giving heed to seducing spirits, and doctrines of devils;
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