One way to understand the difference between unsaved, saved but not yet filled with the Holy Spirit, or saved and filled with the Holy Spirit is to think of a dish pan filled with clean water and soap. The clean water likened to the Holy Spirit and the Soap the Word of God that changes our filth. If one glass is wrapped in saran wrap and stuck in the water it is untouched and remains dirty and unchanged. If we remove the saran wrap we now have contact with the water and soap and it begins to have a change on our lives like someone who comes to Christ and Gods spirit and Word now has contact with. But when the glass is tipped and filled within it is totally consumed by the water and soap, much like the life filled with the Holy Spirit that now has within itself the resident materials needed to touch and affect others.