In John 14 we have Christ taking His relationship with the Father. First displaying them on earth: "He that hath seen me hath seen the Father," and then (as Man) as Intercessor on high obtains the Spirit, whom the Father sends. Still He is Son of God, a divine Person: He comes, manifests Himself; and the Father and He come and make their abode. And He puts them in His own place on earth, and they ought to rejoice in His going up to His in heaven. It is (as ever in John) the Son, but the Son as Man; but here in relationship with His Father; the Son, who is a Man on earth and in heaven. In chapter 15 it is His own place on earth and in heaven; His official, not personal place. On earth He is the True Vine. Israel was not. His followers are in relationship with Himself in the place He is in. So, gone on high, He sends the Comforter who testifies of Him, so exalted. He is among His disciples or exalted in chapter 15; in relationship with His Father in chapter 14 and puts us so; Himself being Son withal, by whom we are so.