Read John 17 today.

This chapter includes Jesus’ prayer for His disciples, both those with Him then and those who would come to believe later. I suggest you read the whole chapter out loud. Imagine you are hearing Jesus pour out His heart in these words.
John 17:20-23 NLT
“I am praying not only for these disciples but also for all who will ever believe in me through their message. [21] I pray that they will all be one, just as you and I are one-as you are in me, Father, and I am in you. And may they be in us so that the world will believe you sent me. [22] “I have given them the glory you gave me, so they may be one as we are one. [23] I am in them and you are in me. May they experience such perfect unity that the world will know that you sent me and that you love them as much as you love me.