Biblical Understanding based on the Record of Scripture
God the Father is the maker of our spirits, and we are charged to become one in spirit with both He and the Christ. This world is run by humanity generally, following the prince of the power of the air, the wrong spirit chosen by man in the garden. It is the foundation of this world, and God's Ecclesia are not immune to its influence. It is our spirit that goes back to God when we die, and if it is defiled, that is not a good thing. We look at defiled in a closer way so that we might remove those imperfections and become similar to Christ in spirit. The 144,000 have no guile in their spirits, and we need to know what that is, and other imperfections as well, and cleanse our spirits as per 2 Corinthians 7:1.