Do you think Jesus went back into heaven; with His work incomplete? The work Jesus came to do on earth was finished and that is what he said. We know he went on to do more and is currently preparing a place for us, but his work on earth was finished. Jesus said it, and to say otherwise is to say a dreadful thing.
John 4:34 NKJV Jesus saith unto them; My meat is to do the will of him that sent me, and to finish his work. On the cross, he said, "It is FINISHED" (John 19:30)
John 17:4 NKJV I have glorified You on the earth. I have finished the work which You have given Me to do.
John 19:28-30 NRSV
(28) After this, when Jesus knew that all was now finished, he said (to fulfil the scripture), "I am thirsty."
(29) A jar full of sour wine was standing there. So they put a sponge full of the wine on a branch of hyssop and held it to his mouth.
(30) When Jesus had received the wine, he said, "It is finished." Then he bowed his head and gave up his spirit.
John 19:23-24 NRSV
(23) When the soldiers had crucified Jesus, they took his clothes and divided them into four parts, one for each soldier. They also took his tunic; now the tunic was seamless, woven in one piece from the top.
(24) So they said to one another, "Let us not tear it, but cast lots for it to see who will get it." This was to fulfil what the scripture says, "They divided my clothes among themselves, and for my clothing they cast lots."
John 19:28-37 NRSV
(28) After this, when Jesus knew that all was now finished, he said (to fulfil the scripture), "I am thirsty."
(29) A jar full of sour wine was standing there. So they put a sponge full of the wine on a branch of hyssop and held it to his mouth.
(30) When Jesus had received the wine, he said, "It is finished." Then he bowed his head and gave up his spirit.
(31) Since it was the day of Preparation, the Jews did not want the bodies left on the cross during the sabbath, especially because that sabbath was a day of great solemnity. So they asked Pilate to have the legs of the crucified men broken and the bodies removed.
(32) Then the soldiers came and broke the legs of the first and the other who had been crucified with him.
(33) But when they came to Jesus and saw that he was already dead, they did not break his legs.
(34) Instead, one of the soldiers pierced his side with a spear, and at once blood and water came out.
(35) (He who saw this has testified so that you also may believe. His testimony is true, and he knows that he tells the truth.)
(36) These things occurred so that the scripture might be fulfilled, "None of his bones shall be broken."
(37) And again another passage of scripture says, "They will look on the one whom they have pierced."
Mat 27:27-31 NRSV
(27) Then the soldiers of the governor took Jesus into the governor's headquarters, and they gathered the whole cohort around him.
(28) They stripped him and put a scarlet robe on him,
(29) and after twisting some thorns into a crown, they put it on his head. They put a reed in his right hand and knelt before him and mocked him, saying, "Hail, King of the Jews!"
[Isa 53:3 NRSV Prophesy fulfilled. "It is FINISHED"
He was despised and rejected by others; a man of suffering and acquainted with infirmity; and as one from whom others hide their faces he was despised, and we held him of no account.]
(30) They spat on him, took the reed and struck him on the head.
(31) After mocking him, they stripped him of the robe and put his own clothes on him. Then they led him away to crucify him.
Jesus fulfilled prophesy his work on earth was done and it was FINISHED.
(Psa 69:21 NRSV) They gave me poison for food, and for my thirst, they gave me vinegar to drink.
Isa 53:3-12 NRSV
(3) He was despised and rejected by others; a man of suffering and acquainted with infirmity, and as one from whom others hide their faces he was despised, and we held him of no account.
(4) Surely he has borne our infirmities and carried our diseases; yet we accounted him stricken, struck down by God, and afflicted.
(5) But he was wounded for our transgressions, crushed for our iniquities; upon him was the punishment that made us whole, and by his bruises, we are healed.
(6) All we like sheep have gone astray; we have all turned to our own way, and the LORD has laid on him the iniquity of us all.
(7) He was oppressed, and he was afflicted, yet he did not open his mouth; like a lamb that is led to the slaughter, and like a sheep that before its shearers is silent, so he did not open his mouth.
(8) By a perversion of justice he was taken away. Who could have imagined his future? For he was cut off from the land of the living, stricken for the transgression of my people.
(9) They made his grave with the wicked and his tomb with the rich, although he had done no violence, and there was no deceit in his mouth.
(10) Yet it was the will of the LORD to crush him with pain. When you make his life an offering for sin, he shall see his offspring, and shall prolong his days; through him, the will of the LORD shall prosper.
(11) Out of his anguish he shall see light; he shall find satisfaction through his knowledge. The righteous one, my servant, shall make many righteous, and he shall bear their iniquities.
(12) Therefore I will allot him a portion with the great, and he shall divide the spoil with the strong; because he poured out himself to death, and was numbered with the transgressors, yet he bore the sin of many, and made intercession for the transgressors. Jesus finished it the work he came to do.
John 19:30 Jesus said, "it is finished"
that is, the whole will of God; as that he should be incarnate, be exposed to shame and reproach, and suffer much, and die; the whole work his Father gave him to do, which was to preach the Gospel, work miracles, and obtain eternal salvation for his people, all which were now done, or as good as done; the whole righteousness of the law was fulfilled, an holy nature assumed, perfect obedience yielded to it, and the penalty of death endured; hence a perfect righteousness was finished agreeably to the law, which was magnified and made honourable by it, and redemption from its curse and condemnation secured; sin was made an end of, full atonement and satisfaction for it were given; complete pardon procured, peace made, and redemption from all iniquity obtained; all enemies were conquered; all types, promises, and prophecies were fulfilled, and his own course of life ended: the reason of his saying so was, because all this was near being done, just upon finishing, and was as good as done; and was sure and certain, and so complete, that nothing need, or could be added to it; and it was done entirely without the help of man, and cannot be undone; all which since has more clearly appeared by Christ's resurrection from the dead, his entrance into heaven, his session at God's right hand, the declaration of the Gospel, and the application of salvation to particular persons: (John Gill)
Jesus finished it all.