"Healing can be instant or sometimes gradual, yet in all times it is gradual." The healing Jesus offers is holistic. Sometimes there is such a focus on physical healing or deliverance as if it is the end all of things. It is bigger than that. It is about being fully restored to wellness in all areas that have been out of joint. 
Sometimes even after people get healed, there is still work to be done on the emotional, psychological and communal impacts of what they have gone through. This is why healing cannot be outside of the community, is not for show and is always tied to the Kingdom of God and our discipleship.