I agree with one of the sisters who said that the enemy tries to use fear but it's breakable in Jesus name. When I was saved this happened to me for the first time. I remember quoting scripture fluently, I had yet to learn. There were times after it would happen, usually after I spent time worshipping and praising Jesus. It wasn't until I spoke the name of Jesus and then I would awake. Although there were times I couldn't speak so I would write Jesus with my finger in the air. When I was unable to move I would spell out each letter of Jesus in my mind and each time it would go away and I would awake. I asked about this and ppl would say this and that about sin but it would happen when I was the closest to God. I finally took my stand one day, I said Devil you don't have rights to bully me around anymore, I am a child of God. I read scriptures like psalms 91 aloud and proclaimed what the Lord has done. It hasn't happened since. Fear is not from God and God says over and over fear not. He shields us and covers us. We don't have to be bullied brothers and sisters, we are children of God!!!