On the cross Jesus said, “It is finished.”
MelanieAnne answered your “finished” quote very well. I would need a little clarification from your understanding of what you think Jesus finished?
If your saying because Jesus died on the cross, his life expired so everything is finished as if to say Jesus work of redemption is over. There is much of Christianity that is not being stated here about it is finished.
No.1 Jesus resurrected and lives, so why is it that Jesus told Mary Magdala "Stop holding on to me, for I have not yet ascended to the Father… I am going to my Father and your Father, to my God and your God.
To grasp this wonderful mystery, then you would understand the “it is finished” part of the Sacrifice to the Father and our God. No one is to touch the Holy Sacrifice to God until God has recieved it. So what is Jesus doing standing in heaven as though slain. He is standing as the Lamb of God who takes away the sin of the world. Yes it is finished as far as time is concerned, but Jesus resurrected now our High Priest before God, and presents the Lamb Sacrifice for our sins, not just in time, but eternally. That is why Jesus commands his holy apostles to eat and drink his body and blood truly present in the Eucharist. Because only the immediate family members of the High Priest of God are the only ones who are to consume the Sacrifice made to God in the hidden room. This Jesus fulfilled the Law and the prophets, as MelanieAnnie graciously introduced to you.
Now the true presence was not revealed to unbelievers in the first century Catholic church, it was called the Secret. (see writings of the early church fathers). Today since the third century the Roman Catholic church by St. Cyril was one of the first Catholic saints to openly teach the true presence, only because the Pagan Emperor of the Roman empire lifted the persecution of Catholic Christians who belived in the true presence.
Today to deny the true presence, first one must come to the knowledge of it before denying what you dont understand. This Sacrificial promise that God has promised to his children (family members) eternal life. The unbeliever is not excluded, unless he comes to the accurate knowledge of the true presence, and willingly rejects Jesus commandment to eat and drink his body and blood.
To understand these mysteries of the mystical body,blood,soul and divinity of our Lord Jesus Christ. First one must be baptized in the formula that Jesus commands his Church to do. Then come to the knowledge of the true presence. It is the Spirit that gives eternal life to those believers who consume the transubstantiated bread and wine of the body, blood, soul and divinity of Jesus Christ, again where the flesh is of no avail.
Consider the breath you breathe at this moment it is not yours. It is the breath of God breathed into your nostrils that gives you life. So it is with the bread and wine, by the Word of God made flesh, Says to the bread and wine “Take and it eat, this is my body, Take and drink this is my blood in the new and everlasting covenant”, it is here that the bread and wine to our flesh senses bread and wine, but to our Soul the Holy Spirit by transubstantiation the bread and wine become the body and blood of our Lord Jesus Christ.
This true presence in the Eucharist gives us life to journey in this desert, and the bread from heaven to sustain us in the true passover from life unto death into everlasting life. This is the white ammulate given to the victor, this is how God will lift us up on that last day, where death has lost its sting to the victors.
I am sorry if I went into to much description, that is why I asked the question at the beginning. I am not sure what you understand about this 2000 year of practicing Christianity in the Roman Catholic church unchanged, or what you have been misinformed about the True christian faith, that is the fulfillment of Law and the Prophets of the old covenant.
Peace be with you.
P.S if you are going to make an objection please do with your reason so as not to go into unneccessary matters

thank you