Matthew 8:28-34
The demons knew by their own words who Jesus was, The Son of God.
Everyone has a testimony, and each testimony is important.
Knowing about Jesus is not enough. we have to study the Bible and teach what God has to say. You don't hae to know the Bible back and forth to be a witness, just tell others what Jesus did for you. No problem that you're experiencing is too trivial for God to help you.
The demons asked Jesus to cast them into the pigs. When He did, while in the pigs, the demons ran off the cliff into the sea. The farmers were made about losing the pigs and told Jesus to leave their city. They had no care that Jesus saved their souls.
We need to get closer to Jesus.
Hebrews 4:16
We need to come BOLDLY to Christ and be thankful for all He's done for us. I would rather be with the man who saved me than be with a demon in a cemetary.
Mark 5:18-20, 3-4 & 7:31-32
Jesus told the man who had a legion of demons in him that Jesus had cast out, to go and tell other what had happened. That one person's testimony was/is important. Your testimony is important.
Revelations 12:11
Romans 8:37
Jesus can save us from all the craziness this world gives