The content of the Gospel of John can be considered as an amplified explanation of Genesis 2:8-10. In these verses God put man in the garden of Eden. In the middle of the garden there were the tree of life and the river of water of life for man to enjoy. The tree of life denotes Christ, and the river denotes the Spirit. The Gospel of John also speaks of God as a tree and as a river in order to be man's life and enjoyment. The Lord is a vine tree (15:1), and the Spirit is a river (7:38-39). Therefore, the Gospel of John is concerning God in Christ as the Spirit to be our life and life supply. The chorus of Hymns, #509 says, "God is in Christ to be my supply, / God as the Spirit nourisheth me; / If upon Christ in spirit I feed, / Filled with His life I'll be."