After Jesus had tasted the vinegar of wrath, he uttered the word of victory, "It is finished!" A day before this cry of triumph, the Son had asked his Father to glorify him on the cross for our ransom, that the Father, Himself, might be glorified. The Son acknowledged in faith that this prayer would be answered, that he had completed the work the Father had given him (John 17:1,4).
How pure is Jesus on the cross! No word of hatred escaped his lips, nor a sigh for pity or a cry of despair, but he pardoned his foes holding on to God’s love, who seemed like an enemy for our sakes. Jesus knew he had finished the work of redemption, because God made perfect the pioneer of our salvation through suffering. No one can fathom the depths and heights of Trinitarian love, for the Son offered himself to God through the eternal Spirit, without stain, a living sacrifice (Hebrew 9:14).
Since the final cry of Christ on the cross, salvation is complete, not needing to be more perfect. It is not our contributions, our good works, our prayers, our sanctification which bring about our righteousness, or added holiness in our lives. The Son of God has done all this once for all. By his death a new age has dawned and peace reigns, because the Lamb of God slain has reconciled us with the Father in Heaven. Whoever believes is justified. The Epistles are the commentary on the words of Jesus, final and divine, "It is finished!".
Jesus bowed his head, finally, in reverence and majesty. He committed his soul into his Father’s hands, who loved him ceaselessly. This love drew him to the throne of grace, where he sits today at the right hand of the Father, one with Him.