If it was so that we can be the person who curse and storms, and there is no judgment then a lot of the bible is wrong. If Christ simply cleanses all of sins, we have no part in it, it is just done, then heaven wouldn't be a place we were safe from sin. Every book of the bible has instructions in it about how to live within the kingdom, and it says nothing about cursing to live there. Almost all covenants are reciprocal, we have our part in them.
James 2:14 What good is it, my brothers, if someone says he has faith but does not have works? Can his faith save him?
James 2:15 If a brother or sister is without clothes and lacks daily food
James 2:16 and one of you says to them, "Go in peace, keep warm, and eat well," but you don't give them what the body needs, what good is it?
James 2:17 In the same way faith, if it doesn't have works, is dead by itself.
James 2:18 But someone will say, "You have faith, and I have works." Show me your faith without works, and I will show you faith from my works.
James 2:19 You believe that God is one; you do well. The demons also believe--and they shudder.
James 2:20 Foolish man! Are you willing to learn that faith without works is useless?