▼ Or “by finishing” or “by accomplishing.” Jesus now states that he has glorified the Father on earth by finishing (τελειώσας [teleiōsas] is best understood as an adverbial participle of means) the work which the Father had given him to do.

▼ By completing the work. The idea of Jesus being sent into the world on a mission has been mentioned before, significantly in 3:17. It was even alluded to in the immediately preceding verse here (17:3). The completion of the “work” the Father had sent him to accomplish was mentioned by Jesus in 4:34 and 5:36. What is the nature of the “work” the Father has given the Son to accomplish? It involves the Son’s mission to be the Savior of the world, as 3:17 indicates. But this is accomplished specifically through Jesus’ sacrificial death on the cross (a thought implied by the reference to the Father “giving” the Son in 3:16). It is not without significance that Jesus’ last word from the cross is “It is completed” (19:30).

▼ Grk “the work that you gave to me so that I may do it.”

▼ 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.

▼ 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.