If you have received the power of the Holy Spirit, this video series by Derek Prince on Spiritual Warfare will provide valuable information:
Once your life has been cleaned up from bondages, keep your mind undefiled then fast to receive the power of the Holy Spirit. If your beliefs don’t line up properly with the bible, God may not use you.
Why? Because God wants his followers to obey every word that proceeds from the mouth of God. See Matthew 4:4. If you don’t know the word of God or understand it incorrectly, there is a high probability that you’re going to lead people astray with incorrect doctrines. Also see this verse:
Jeremiah 7:23 King James Version (KJV)
23 But this thing commanded I them, saying, Obey my voice, and I will be your God, and ye shall be my people: and walk ye in all the ways that I have commanded you, that it may be well unto you.
Obedience to the word is not optional. Disobedience leads to all kinds of disasters. Even slight departures from the word is extremely dangerous.