Mark 3:
22 And the teachers of the law who came down from Jerusalem said, “He is possessed by Beelzebul! By the prince of demons he is driving out demons.”
23 So Jesus called them over to him and began to speak to them in parables: “How can Satan drive out Satan?
24 If a kingdom is divided against itself, that kingdom cannot stand.
25 If a house is divided against itself, that house cannot stand.
26 And if Satan opposes himself and is divided, he cannot stand; his end has come.
27 In fact, no one can enter a strong man’s house without first tying him up. Then he can plunder the strong man’s house.
28 Truly I tell you, people can be forgiven all their sins and every slander they utter,
29 but whoever blasphemes against the Holy Spirit will never be forgiven; they are guilty of an eternal sin.”
30 He said this because they were saying, “He has an impure spirit.”
When someone claims to do something from God through the power of the holy spirit, and you say it is from Satan, guess what you are doing? "He said this because they were saying He has an impure spirit.
It may be true that these people are doing things through Satan, and it may be true that they are doing it through the Holy Spirit. Just because you do not believe it to be from the holy spirit gives you no right to claim it is from the devil, in fact, that places your very soul in jeopardy.
So what should you do when you think people are teaching wrong? What did Jesus say to do?
There is a passage in the bible (sorry, can't find it right now) where the apostles come to Jesus and say, hey, these people are preaching about you, but we didn't tell them to, they are fmdoing it on their own authority. Jesus said leave them alone, at least my name is being taught. I was never comfortable with this passage, but since my Lord spoke it, I must follow it.
I know the bible teaches that if one has the faith of a mustard seed and tells a mountain to be moved, it will be moved. I know there are a majority of Christians who don't believe it which, incidently, is the reason they can't move mountains. I know there is a minority who claim abilities they do not possess for monetary gain. And I know there are a vast minority who can move mountains.
If someone does something the bible says is possible and I claim it is from Satan I am guilty of not leaving people alone and possibly blashamy of the holy spirit.
That person who claims to be able to descern spirits and you say it's from the Devil? Blashamy of the holy spirit if they actually can.
That person who claims to be able to levitate by faith and you claim it's from the Devil? Blashamy of the holy spirit if they can.
Are you really going to gamble your eternal soul that this person isn't doing it from the holy spirit? If you are so certain why aren't you moving mountains, walking on water, levitating or doing anything you can think of, since the bible claims you can?
The doctrine of men teaches that nobody can do this anymore, the doctrine of God teaches that all those with sufficient faith can.
Why are you gambling eternity on the doctrine of men?
So, what can you say? "I am not so sure that's from God, it might be from Satan". Perfectly valid, in my opinion, you are not staying something is from Satan, but questioning it, which I think is fine, hopefully Jesus/God does too.
There are a number of people claiming to do things by faith that I have researched and found out they are charletons. Not doing it through the power of Satan, but doing it through the power of trickery. Yet, I do not go around denouncing them, Jesis told me to leave them alone. What I can do, however, is make sure that the ones being tricked are aware of the salvation plan (love thy neighbor as thyself, come to Jesus for forgiveness). In the end, that is all that matters.
God and I have some disagreements on whether certain churches should of been allowed to exist through history. God says that He allows it because the maximun number of people got saved through them, even though they may not be 100% correct, the whole at least my name is taught thing. If I do not agree with God, God's rule still stands, leave those alone who are teaching my name. If you are not against me you are for me, if you are not for me you are against me.
I believe that people can be truely saved from any Christian denomination, sometimes in spite of the denomination rather than because of it.
In the end, everyone has access to a bible nowadays. Everyone can read the words of our Lord, "You know the commandments.. love thy neighbor as thyself". Even if a church is wrong at least they get the correct word of God in their hands.
I am reminded of a missionary who asked God why God sent him, he wasn't really that good. God's response was that he was willing. If a minister is wrong in his teachings, at least he's willing.
Why are we dividing the kingdom of heaven? Be sure you are not doing all you can to make it fail. "If a kingdom is divided amonst itself, that kingdom can not stand".
God bless you.