You often hear people mimic others who speak in tongue or you see some people trying to demonstrate the Holy Spirit.

How do you know when you have sinned against the Holy Spirit? It is difficult to know, because some things are done against the Holy Spirit that you are not even aware of.

You need to be careful in your dealings with the Holy Spirit because the sin against the Holy Spirit is unforgivable.

Jesus said you can sin against him and be forgiven, he said every blasphemy, even sinning against God can be forgive, but when you speak blaspheme against the Holy Spirit you can never be forgiven either here on earth or the world to come.

It is true that not all pastors that casts out demons uses the power of the Holy Spirit, but how do you which is which? The bible says, by their fruits you will know them. Don’t judge the power of the Holy Spirit because any man of God who truly casts out demons does so with the power of the Holy Spirit, and condemning that act of the man of God is sinning against the Holy Spirit.

Matthew 12: 31- 32, “Every sin and blasphemy can be forgiven- except blasphemy against the Holy Spirit, which will never be forgiven. Anyone who speaks against the Holy Spirit will never be forgiven, either in this world or in the world to come”


So mind what you say about the Holy Spirit, you may not know the boundary of what to say or not say about the Holy Spirit. I think this is why it is called “Holy”. It is Holy and should not be touched with anything dirty.
If you see a man of God who truly uses the power of the Holy Spirit to cast out demons and you say, “Lair” then you have called the Holy Spirit liar! Be careful.

The word of God says, all sins, including fornication, adultery, murder can all be forgiven, but the sin against the Holy Spirit cannot be forgiven.

Sinning against the Holy Spirit is not forgivable, either here on earth on in the world to come.

Source: http://citofgod..com/2014/12/what-is-sin-against-holy-spirit.html

well said