Let's look at some verses from John 17 (NASB):
17 Jesus spoke these things; and lifting up His eyes to heaven, He said, “Father, the hour has come; glorify Your Son, that the Son may glorify You, [SUP]2 [/SUP]even as You gave Him authority over all flesh, that to [SUP][
a][/SUP]all whom You have given Him, He may give eternal life. [SUP]3 [/SUP]This is eternal life, that they may know You, the only true God, and Jesus Christ whom You have sent. [SUP]4 [/SUP]I glorified You on the earth, [SUP][
b][/SUP]having accomplished the work which You have given Me to do. [SUP]5 [/SUP]
Now, Father, glorify Me together with Yourself, with the glory which I had with You before the world was.
[SUP]20 [/SUP]“I do not ask on behalf of these alone, but for those also who believe in Me through their word; [SUP]21 [/SUP]that they may all be one; even as You, Father,
are in Me and I in You, that they also may be in Us, so that the world may [SUP][
f][/SUP]believe that You sent Me.
Their Future Glory
[SUP]22 [/SUP]The glory which You have given Me I have given to them, that they may be one, just as We are one; [SUP]23 [/SUP]I in them and You in Me, that they may be perfected [SUP][
g][/SUP]in unity, so that the world may [SUP][
h][/SUP]know that You sent Me, and loved them, even as You have loved Me. [SUP]24 [/SUP]Father, I desire that they also, whom You have given Me, be with Me where I am, so that they may see My glory which You have given Me, for You loved Me before the foundation of the world.
[SUP]25 [/SUP]“O righteous Father, [SUP][
i][/SUP]although the world has not known You, yet I have known You; and these have known that You sent Me; [SUP]26 [/SUP]and I have made Your name known to them, and will make it known, so that the love with which You loved Me may be in them, and I in them.”
You mentioned the glory that Jesus was talking about in John 17 in an earlier post. There are really two glories going on in John 17. The first is what Jesus mentions in verse 5. This kind of glory is a glory that Jesus shares with the Father, and that Jesus had before the world was (in other words, from eternity). The second kind of glory is one that all believers will share in.
It is the same with the unity in John 17. The unity that Jesus and the Father have is a different kind than the unity that is with all believers. For Jesus and the Father, their unity is of of the same essence and being. Obviously, believers will not have that kind of unity with God.