God is spirit and He is the source of our spirit.
The word Spirit is comprised of two words in the old and new testament. In the Old Testament it is the Hebrew word – ruah. In the New Testament the Greek term is – pneuma. These are regular terms that mean breath.
Eph 1:18-23 Eph 4:1-3 Eph 3:1-12 Eph 4:4-6 Eph 3:3-5 Heb 6:17-20