John answered, "A man can receive nothing, unless it has been given him from heaven.

 Finally, in this passage, John lays down a great law. That which is born of the flesh is flesh and that which is born of the Spirit is spirit. A man by himself is flesh and his power is limited to what the flesh can do. By himself he cannot be other than defeated and frustrated; that we know only too well; it is the universal fact of human experience. But the very essence of the Spirit is power and life which are beyond human power and human life; and when the Spirit takes possession of us, the defeated life of human nature becomes the victorious life of God. 