Man’s spiritual nature is God’s supreme gift since only through our spirit are we able to commune with Him. Indeed, the opportunity for His indwelling presence is the reason our spirit exists. God actually takes up residence in our spirit as we allow Him to do so. Because He has given us the capacity of free will, God lives within us only as an invited guest.
Our spirit has been fashioned in such a way as to provide the Holy Spirit a dwelling place within. I’m sure you’ve heard it said that within each person there is a God-shaped vacuum which only He can fill. That place is our spirit. Without the inhabiting presence of God, our spirit is simply dead—and therefore purposeless. With Him fully active inside, the foundation is laid for fulfilling the purpose for which we were created.