When John writes that as He (Jesus) is so are we in this world he declares that the desire in the Father’s heart to extend the Triune life to man has come to fruition. It is a declaration that humanity and divinity is forever joined in Jesus Christ, that He is the mediator who stepped down and became one of us so that we could step up and become incorporated into the eternal joy of the Trinity.
When John further writes: Behold, I stand at the door, and knock: if any man hear my voice, and open the door, I will come in to him, and will sup with him, and he with me, it demonstrates that the Father’s overarching desire is to see all men realize that He has extended His hand and invited anyone who wants to participate in the profuse wedding party where the success of the incarnation is duly celebrated.
He is the originator of this grand scheme which calls for joyful celebration. He is the one who extends His hand and invites ordinary human beings to become partakers of the Triune intimacy so that their existence will become far from ordinary. In Jesus Christ the divine life actually reached us. Otherwise the Father would still have been this distant, austere, omnipresent being out of reach for anyone of us, and we would forever have been encapsulated in this bubble of distance. Furthermore, this severe misapprehension concerning His true nature would have been perpetuated for all eternity.
The purpose and intent of the Triune union found its fulfillment in Jesus Christ. He accomplished the union, the connection, the intimacy between man and divinity. In Him we have full access to the Trinitarian circle of dance. In Him we are more than mere moral beings – we are manifestations of the grandness of the triune fellowship so that our very being is a celebration of life!
The ascension is the guarantee that the incarnation was not merely a parenthesis in eternity. Bone of our bones, flesh of our flesh Jesus Christ is wholly man and simultaneously declared wholly God by His Father so that when He ascended and settled at the right hand of God He did so as a perfect human which connotes that God forever speaks the human language in His conversations in the Heavenly realm. The ascension declares that the Triune life is now lived out inside human existence. Jesus Christ will forever share in our humanity like we forever will share in His divinity.