John 17:20-23
“Not for these only do I pray, but for those also who believe in me through their word, that they may all be one; even as you, Father, are in me, and I in you, that they also may be one in us; that the world may believe that you sent me. 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; that the world may know that you sent me, and loved them, even as you loved me.”
This passage is part of Jesus's 'High Priestly Prayer' in the Gospel of John, traditionally understood as a prayer for his disciples and future believers just before his crucifixion. Here, he expresses a deep desire for unity among his followers.
What does this passage suggest about the practical work required to achieve a visible, compelling unity?