Dear friends, do not believe everyone who claims to speak by the Spirit. You must test them to see if the spirit they have comes from God. For there are many false prophets in the world. 1 John 4:1 NLT
How do you know if someone is speaking on behalf of the Holy Spirit? Some people are so charismatic that you love to hear them speak. Remember when you took tests in school and there were true and false questions? How did you decide if the statement was true or not? If any part of the statement was false, then the whole statement was false. Satan is good about hiding the false with the truth. We must know our Bible to recognize the false. How does a bank teller recognize if a $20 bill is counterfeit? By knowing what the real one looks like. The same goes for recognizing if something is true or not according to the Bible.
Look to God’s instructions and teachings! People who contradict His word are completely in the dark. Isaiah 8:20 NLT