1.Rebellion is going against what you are supposed to do / against what the word of God says.
2. I would say rebellion is as bad as witchcraft in the sense that ,witchcraft is going against God's command of not fully trusting I Him .
3.Rebellion has to do with arrogance ,in that while knowing what is right , you decide to do otherwise
4.when we find rebellion in our hearts , we need to repent and ask for forgiveness from God and also ask Holy Spirit to guide us to the truth.
5. If we do nothing about our rebellion, we detach ourselves from the love of God and we make ourselves vulnerable to be used by the enemy.