Most Relevant Verses
The Lord said to him, By what means? And he said, I will go forth and be a lying spirit in the mouths of all his prophets. [The Lord] said, You shall entice him and succeed also. Go forth and do it.
For the Sadducees hold that there is no resurrection, nor angel nor spirit, but the Pharisees declare openly and speak out freely, acknowledging [their belief in] them both.
Then a great uproar ensued, and some of the scribes of the Pharisees' party stood up and thoroughly fought the case, [contending fiercely] and declaring, We find nothing evil or wrong in this man. But if a spirit or an angel [really] spoke to him -- "? Let us not fight against God!
To another the working of miracles, to another prophetic insight ( the gift of interpreting the divine will and purpose); to another the ability to discern and distinguish between [the utterances of true] spirits [and false ones], to another various kinds of [unknown] tongues, to another the ability to interpret [such] tongues.
For [you seem readily to endure it] if a man comes and preaches another Jesus than the One we preached, or if you receive a different spirit from the [Spirit] you [once] received or a different gospel from the one you [then] received and welcomed; you tolerate [all that] well enough!
Not to allow your minds to be quickly unsettled or disturbed or kept excited or alarmed, whether it be by some [pretended] revelation of [the] Spirit or by word or by letter [alleged to be] from us, to the effect that the day of the Lord has [already] arrived and is here.
Beloved, do not put faith in every spirit, but prove (test) the spirits to discover whether they proceed from God; for many false prophets have gone forth into the world.
By this you may know (perceive and recognize) the Spirit of God: every spirit which acknowledges and confesses [the fact] that Jesus Christ (the Messiah) [actually] has become man and has come in the flesh is of God [has God for its source];
And every spirit which does not acknowledge and confess that Jesus Christ has come in the flesh [but would annul, destroy, sever, disunite Him] is not of God [does not proceed from Him]. This [ nonconfession] is the [spirit] of the antichrist, [of] which you heard that it was coming, and now it is already in the world.
And I saw three loathsome spirits like frogs, [leaping] from the mouth of the dragon and from the mouth of the beast and from the mouth of the false prophet.
For really they are the spirits of demons that perform signs (wonders, miracles). And they go forth to the rulers and leaders all over the world, to gather them together for war on the great day of God the Almighty.