Growing up Pentecostal, there were some scriptures I would hear quoted quite frequently. The first one was
And the spirits of the prophets are subject to the prophets. 1 Corinthians 14:32
Another verse was:
Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world. 1 John 4:1
There was a good reason for that. It is easy to get so caught up in what you are saying or doing that you don't realize what is happening. It is not the Holy Spirit doing the talking and the doing... it is you. We must constantly guard against this in the words we say, the words we write and in the things we do.
Anytime we feel that it is our duty/responsibility to set everyone else straight, we need to stop and take a very deep breath. Is this truly the Holy Spirit... or is it us?
Only God truly knows the answer but there are some red flags we should look for. If you believe you have received "new light" and it is your job to teach it to all the other Christians... slow down and be very careful. Are you adding to or taking away from the Word of God? Watch out! Are you persistently trying to force your views upon others as opposed to simply presenting them? Show me where Jesus forced people to listen to Him? Show me where the Holy Spirit used force upon people? That is not God's way and if we find that we are doing that or... discover that others feel like we are... we need to take a deep breath and ask God about it.
As much as we want to share the truth with people, we must never forget that it is the Holy Spirit who convicts and teaches... not us. We simply get to be used as an instrument sometimes.
Am I suggesting that we should be silent when the Holy Spirit moves upon us? Not at all. I am only saying we need to be 100% certain that it is the Holy Spirit as opposed to us and... we cannot afford to be wrong!