I wanted to add this thought. The question may be asked...why then do we do the physical things like baptism or communion in the church (body of Christ) if we have spiritual freedom? Because we must remember that there are all sorts of people who come to the family of believers that are at different levels of understanding and believing. Some are still at the physical level. The physical act helps these people understand and transition from physical to spiritual.
Plus the physical acts also strengthen those of us that may need the reminder of what God wants to do within us with His Spirit. Since the world has a way of affecting each and every one of us by causing us to lose focus.