"It is finished!"

Before his death, Jesus said these three following Scriptures regarding the work the Father gave him to finish:

“My food,” said Jesus, “is to do the will of him who sent me and to finish his work.” (John 4:34)

“I have testimony weightier than that of John. For the works that the Father has given me to finish—the very works that I am doing—testify that the Father has sent me.” (John 5:36)

“I have brought you glory on earth by finishing the work you gave me to do.” (John 17:4)

On the cross, Jesus said these two following Scriptures about finishing the work the Father gave him:

 “Later, knowing that everything had now been finished, and so that Scripture would be fulfilled, Jesus said, “I am thirsty.” (John 19:28)

“Jesus said, ‘It is finished!’” (John 19:30)

The Heavenly Father sent his Son Jesus Christ to come into the world to do the work of his Father. And what is the work the Father gave Jesus to do on earth? Jesus said in Matthew 5:17, “Do not think that I have come to abolish the Law or the Prophets; I have not come to abolish them but to fulfill them.” Jesus came to fulfill what was spoken of him in the Old Testament.

Jesus would be a better and final:

Prophet - to reveal the Heavenly Father to us by his obedient life unto death
Priest - to atone for our sin, to turn God’s wrath from us and reconcile us to God
King - to rule over us in the kingdom of his holy-love as a resurrected and ever-living Lord

Jesus Christ was our perfect representative and substitute:

He lived the life we ought to live - perfectly obeyed his Father and credited his obedient life to us
He died the death we deserve - took the just punishment for our sin on himself in order to forgive us
He has been raised to life - applied to us, by his Spirit, his finished work in his life and death

The benefits of Jesus’ perfectly obedient life and his substitutionary death are transferred to each one at the moment a person stops believing in themselves and what they can do for God, and starts believing in Jesus and what he has done for them.

The Messianic Psalm 22:30-31 says, “Posterity will serve him; future generations will be told about the Lord. They will proclaim his righteousness, declaring to a people yet unborn: He has done it!” On the cross, Jesus said, “It is finished!” When a person hears the good news about Jesus and believes in him, that person will be able to say about Jesus, “He has done it!”

When Jesus finished the last part of his life's work on the cross he said, “I am thirsty”. He was thirsty because of the eternal punishment that he had just gone through for our sins. And he did it to create a thirst in us for his true righteousness which only God can give us as a free gift of grace. Jesus in Matthew 5:6 says, “Blessed are those who hunger and thirst for righteousness, for they will be filled.”

Do you hunger and thirst for the gift of Jesus’ perfect righteousness? If yes, then give your sins to Jesus by confessing them to him, and receive Jesus and the priceless and undeserved gift of his righteousness right now. And in that way, God will justify you of all your sins. You will be accounted by God as if you have never sinned, and as if you have always obeyed, in Jesus your representative and substitute. Now with the psalmist, you can "proclaim his righteousness" and with me who preached it to you you can say "He has done it."