Random thoughts can pop into your mind. And often those thoughts are negative.
You’re no good. You’re ugly. You’re condemned. God doesn’t love you.
But thoughts are often deceptive. Our thoughts can be deceptions from Satan. We must learn theological truth in order to combat thoughts that may lead us astray.
There is a reason Satan is called the accuser of the brethren. He wants us to be confused. He wants us to be scared. He wants us to doubt our faith.