"It is finished"

What did Jesus mean when he said, "It is finished" while on the cross?

For the past 2 to 3 years, I have been interpreting his statement to mean the end of blood sacrifices. Jesus told the disciples that the Temple would fall, and sacrifices were permitted only at the Temple. In representing the pascal lamb, Jesus was declaring himself to be the last offering for the transgressions of he who holds the knife. 

After reading from the Aquarian Gospel of Jesus Christ, I have reiterated my assertion. The below excerpt is from Part 3, Chapter 18. Note: In Chapter 13, John the Baptist is told by an Egyptian priest, who prepares him for his role as the new Elijah, that blood sacrifice does not absolve sin, and furthermore that it was a tradition taken from idol worshippers from other lands. Chapter 13 can be found at the top of the page in the above link:

"THE great feast of the Jews was on, and Joseph, Mary and their son, and many of their kin, went to Jerusalem. The child was ten years old.

2. And Jesus watched the butchers kill the lambs and birds and burn them on the altar in the name of God.

3. His tender heart was shocked at this display of cruelty; he asked the serving priest, What is the purpose of this slaughter of the beasts and birds? Why do you burn their flesh before the Lord?

4. The priest replied, This is our sacrifice for sin. God has commanded us to do these things, and said that in these sacrifices all our sins are blotted out.

5. And Jesus said, Will you be kind enough to tell when God proclaimed that sins are blotted out by sacrifice of any kind?

6. Did not David say that God requires not a sacrifice for sin? that it is a sin itself to bring before his face burnt offerings, as offerings for sin? Did not Isaiah say the same?

7. The priest replied, My child you are beside yourself. Do you know more about the laws of God than all the priests of Israel? This is no place for boys to show their wit.

8. But Jesus heeded not his taunts; he went to Hillel, chief of the Sanhedrin, and he said to him,

9. Rabboni, I would like to talk with you; I am disturbed about this service of the pascal feast. I thought the temple was the house of God where love and kindness dwell.

10. Do you not hear the bleating of those lambs, the pleading of those doves that men are killing over there? Do you not smell that awful stench that comes from burning flesh?

11. Can man be kind and just, and still be filled with cruelty?

12. A God that takes delight in sacrifice, in blood and burning flesh, is not my Father-God."