In John 17 the Lord Jesus prayed for our oneness in the Triune God. This prayer includes three stages of oneness—in the Father’s name (one), sanctification in the word of reality (two), and in glory (this post). Three stages in one hymn.
In John 17:22-23 the Lord prayed, “The glory which You have given Me I have given to them, that they may be one, even as We are one; I in them, and You in Me, that they may be perfected into one…” The glory is the expression of God.
Because we have all received the divine life and divine nature (2 Peter 1:4), we have this glory. The extent to which we live by the divine life and divine nature determines the magnitude of glory expressed. New Jerusalem will be the fullest expression.
As before, oneness in the divine glory is not outward, not man-made, not by adherence to a creed, not by following a set of rules. The real oneness, now and unto New Jerusalem, is as “We [the Triune God] are one.” Nothing less, nothing lower. Our oneness is God in Christ in us and we in Him. This matches what the Lord told the disciples, “you will know that I am in My Father, and you in Me, and I in you” (John 14:20).
In the Triune God, with the Triune God in us, we “may be perfected into one.” Perfection is a quality of God, not of men. For us to be perfected into one is to be perfected in our living in and because of the Triune God. At times we fail, but we confess our sins and receive His forgiveness. Eventually we will mature in the divine life and come to the reality, the perfection, of New Jerusalem.
As in verse 17:21, so in verse 23 the result of the oneness today is “that the world may know.” The perfection in glory is not only for New Jerusalem but even for today.