The Holy Spirit is the medium of God for humankind. He makes a real and material place for us and supplies the whole resource of our creaturely life with God. The Father and the Son speak the Spirit. The Spirit is the language they speak. But the Spirit can speak and be many languages, without being less the language of the Son and Father. The Spirit extends their speech to create a new language, which the Father and the Son are content to speak. They speak humanity. Humanity is one of the modes in which they speak divinity to each other. Humanity does not give divinity something that it did not have before; it is not a reduction of, or addition to, their divinity. The Son is the first speaker and the native speaker. He speaks humanity perfectly and is at home in the flesh; and in the flesh of humanity he is perfectly at home with the Father. He is not impeded by or disguised by the flesh, for it is brought into existence by the speaking of the Son and the Father. The human entity and mode of being are spoken by that enfleshing word and utterance. This humanity the Son receives from the Father, by the Spirit.
Douglas H Knight The Eschatological Economy: Time and the Hospitality of God chapter 1.5
