John 17:20 “I pray not only for these but also for those who trust in me through their word.
John 17:21 May they all be one, as you, Father, are in me and I am in you. May they also be in us, so that the world may trust that you sent me.
John 17:22 I have given them the glory you have given me, so that they may be one as we are one.
John 17:23 I am in them and you are in me, so that they may be made completely one, that the world may discover you have sent me and have loved them as you have loved me.
the unity that he prayed for
Jesus defined the unity that he prayed for in this prayer. He wants every believer to share his glory. He has given us the glory that the Father had given him. Our reputation is tied to him. He is the Christ, we are the Christians.
The second definition of Christian unity is found in the gospel mission we share. Jesus prayed that the world may discover God has sent Jesus and has loved us as he has loved Jesus.”
We share some kinds of unity which are superficial. We may be in doctrinal agreement with some Christians, but in disagreement with others. We may share traditions and practices with some Christians, but not follow the traditions of others.
But all true Christians everywhere share the glory of Christ and the gospel mission.