The interesting thing is that God has no intention to separate His Spirit from our spirit. In many places in the Bible it is impossible to say whether the spirit being spoken of refers to the human spirit or God’s Spirit. Even many Greek experts cannot tell the difference. Throughout the ages Bible translators, from Luther in Germany to the translators of the King James Version, have been unable to ascertain which of the many references to the spirit in the New Testament denote the human spirit and which denote God’s Spirit. 

   Romans 8 is perhaps the chapter with the most references to the word spirit. Who can tell which words refer to the human spirit and which refer to God’s Spirit? When the Bible translators come to Romans 8, they leave the readers to decide for themselves which spirit refers to the human spirit and which refers to God’s Spirit. When the English versions come to the word pneuma, some use an upper-case Spirit, and others use a lower-case spirit. All versions differ in this respect, and no one person’s view is authoritative. The truth is that it is impossible to differentiate between the Holy Spirit and man’s spirit. When we received a new spirit, we received God’s Spirit at the same time. The Holy Spirit resides in our spirit, but it is difficult to tell which is the Holy Spirit and which is our spirit. There is a distinction between the Holy Spirit and our spirit, but the two are not separate. Hence, the release of the spirit is not merely a release of man’s spirit but a release of the Holy Spirit through man’s spirit, because 

The Breaking of the Outer Man and the Release of the Spirit - Watchman Nee