1 Beloved, do not believe every spirit, but test the spirits, whether they are of God, because many false prophets have gone out into the world.
1 John 4:1 Cross References - NHEB
Deuteronomy 13:1-5
1 If there arise in the midst of you a prophet, or a dreamer of dreams, and he give you a sign or a wonder,
2 and the sign or the wonder come to pass, of which he spoke to you, saying, "Let us go after other gods" (which you have not known) "and let us serve them";
3 you shall not listen to the words of that prophet, or to that dreamer of dreams: for the LORD your God proves you, to know whether you love the LORD your God with all your heart and with all your soul.
4 You shall walk after the LORD your God, and fear him, and keep his commandments, and obey his voice, and you shall serve him, and cling to him.
5 That prophet, or that dreamer of dreams, shall be put to death, because he has spoken rebellion against the LORD your God, who brought you out of the land of Egypt, and redeemed you out of the house of bondage, to draw you aside out of the way which the LORD your God commanded you to walk in. So you shall put away the evil from the midst of you.
Proverbs 14:15
15 A simple man believes everything, but the prudent man carefully considers his ways.
Jeremiah 5:31
31 The prophets prophesy falsely, and the priests rule by their own authority; and my people love to have it so. What will you do in the end of it?
Jeremiah 29:8-9
Matthew 7:15-16
Matthew 24:4-5
Matthew 24:23-26
23 "Then if anyone tells you, 'Look, here is the Christ,' or, 'There,' do not believe it.
24 For there will arise false messiahs, and false prophets, and they will show great signs and wonders, so as to lead astray, if possible, even the chosen ones.
25 "See, I have told you beforehand.
26 If therefore they tell you, 'Look, he is in the wilderness,' do not go out; 'Look, he is in the inner chambers,' do not believe it.
Mark 13:21
21 Then if anyone tells you, 'Look, here is the Christ.' or, 'Look, there.' do not believe it.
Luke 12:57
57 Why do you not judge for yourselves what is right?
Luke 21:8
8 He said, "Watch out that you do not get led astray, for many will come in my name, saying, 'I am he,' and, 'The time is near.' Therefore do not follow them.
Acts 17:11
11 Now these were more noble than those in Thessalonica, in that they received the word with all readiness of the mind, examining the Scriptures daily to see whether these things were so.
Acts 20:29
29 For I know that after my departure, vicious wolves will enter in among you, not sparing the flock.
Romans 16:18-19
18 For those who are such do not serve our Lord Christ, but their own belly; and by their smooth and flattering speech, they deceive the hearts of the innocent.
19 For your obedience has become known to all. I rejoice therefore over you. But I desire to have you wise in that which is good, but innocent in that which is evil.
1 Corinthians 12:10
10 and to another workings of miracles; and to another prophecy; and to another discernings of spirits; to another different kinds of tongues; and to another the interpretation of tongues.
1 Corinthians 14:29
29 Let the prophets speak, two or three, and let the others discern.
1 Thessalonians 5:21
21 but test all things; hold firmly that which is good.
1 Timothy 4:1
1 But the Spirit says expressly that in later times some will fall away from the faith, paying attention to seducing spirits and doctrines of demons,
2 Timothy 3:13
13 But evil people and impostors will grow worse and worse, deceiving and being deceived.
2 Peter 2:1
1 But false prophets also arose among the people, as false teachers will also be among you, who will secretly bring in destructive heresies, denying even the Master who bought them, bringing on themselves swift destruction.
1 John 2:18
18 Little children, these are the end times, and as you heard that the antichrist is coming, even now many antichrists have arisen. By this we know that it is the final hour.
2 John 1:7
7 For many deceivers have gone out into the world, those who do not confess that Jesus Christ came in the flesh. This is the deceiver and the antichrist.
Revelation 2:2
2 "I know your works, and your toil and perseverance, and that you cannot tolerate those who are evil, and have tested those who call themselves apostles, and they are not, and found them false.