12 Or “in your presence”; Grk “with yourself.” The use of παρά (para) twice in this verse looks back to the assertion in John 1:1 that the Word (the Λόγος [Logos], who became Jesus of Nazareth in 1:14) was with God (πρὸς τὸν θεόν, pros ton theon). Whatever else may be said, the statement in 17:5 strongly asserts the preexistence of Jesus Christ.
13 Grk “before the world was.” The word “created” is not in the Greek text but is implied. It is important to note that although Jesus prayed for a return to the glory he had at the Father’s side before the world was created, he was not praying for a “de-incarnation.” His humanity which he took on at the incarnation (John 1:14) remains, though now glorified.

In other versions

And now, Father, glorify me in your own presence with the glory that I had with you before the world existed.

And now, Father, glorify me in your presence with the glory I had with you before the world began.

Now, Father, glorify me in your presence with that glory I had with you before the world existed.

Now, Father, bring me into the glory we shared before the world began.

And now, Father, you glorify me at your side with the glory that I had at your side before the world existed.

And now, O Father, glorify thou me with thine own self with the glory which I had with thee before the world was.

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