The last words spoken by the dying Christ in St. John's Gospel are simply: tetelestai, or in Latin, consummatum est. 'It is finished' or 'it is fulfilled'. Did Jesus mutter these words on the cross as his life slipped away in a tone of resigned defeat? Or were they regretfully sighed like one obliged to undertake a painful but necessary task? Did Jesus utter 'it is finished' in exhausted relief that he had endured to the end? Or was it instead a defiant cry of victory?
My humble opinion? It was victorious. Not likely a shout, but not in defeat, as he had accomplished what His Fsther had sent Him to do.
"Father, into your hands I commend my spirit."
The King James version of the Bible states this:
"And when Jesus had cried with a loud voice, he said, Father, into your hands I commend my spirit: and having said this, he gave up the spirit."
Didn't "It is finished" come before this?
The significance is that the final words of the high priest doing the lamb sacrifice on the Passover for the sins of the nation is “it is finished”. It signified the completion of the prophecy of Passover by the Lamb of God. Priest, and King. He uttered those words at the exact same time that the High Priest would have uttered them. But then, if he was the Mashiach, he is the High Priest.
VERY significant.