The Roman Catholic religion (and it is so far from Christianity that it is indeed as Paul described an other religion') well Romanism is not Christianity for ONLY God can reconcile a dead spirit to Himself by imputing Christ's righteousness to that one so that one can even approach The Holy God. You are not born with righteousness nor can you be trained to righteousness UNTIL God reconciles you to Himself. The is no works exchange program by you that starts, or completes what ONLY God can do.
Did you know that The Word of God says we born agains will be priests and kings to our God? Being born from above is solely by the Grace of God by faith alone in Christ alone.
As a practicing catholic you have a belief that your priesthood can perform magic via magical incantation which requires Christ to come from the Throne Room to hundreds of thousands of Catholic altars to feed His flesh and blood to your adherents. That is a pagan notion incorporated into the early Christian faith by men who were carnal and not spiritual so they did not understand the spiritual Remembrance Jesus instituted the night He was betrayed.
That Passover celebration is not connected to the sarcasm Jesus used as shown in JOhn 6, but the Roman Catholic religion asserts the connection so as to empower the heretical priesthood of your religion.
My concern is your spiritual state. If you were born again sometime in the past, before being inculcated by Romanism, then you are destined to be Raptured in the near future with ALL the Church of Jesus Believers.
The concept of the three tenses or phases of Salvation might help you, if you will seek truly to understand what The Grace of God in Christ means to your spirit, for believing on Whom God has sent for your Salvation is an immediate imputation BY GOD ALONE to your dead spirit, imputation of the righteousness of Christ and God's seed within your come-alive spirit (1 John 3:9).
Yes, I believe once saved always thereafter saved. Why? Becuase ONLY God can transform your spirit from deadness to alive forever more, and He does that for believers because it glorifies The One Whom H sent, not you or me.
I think from your mindset and age that finding truth has long gone from you. Well, you best hope God has given you the opportunity to cleanse your soul of sin to purify it to be in His presence. Just magically clicking your heels together and saying Jesus forgive me all my unstated sins that I don’t really repent of but command you to forgive me...no, that won’t do it. Jesus did give power to Priests through the lineage from the apostles down all the way to today. But, you are never going to be able to understand that anymore than you can understand the bible. Baptism cleanses us from original sin, that is the main purpose of it. Then, we are born again at the second stage of baptism...confirmation. That is all biblical and indeed there is not one thing I have been able to find that Catholics have wrong in their doctrine. I cannot say the same about Protestantism...indeed, the truth is with over 20,000 different theologies of protestant thinking...it is a perversion of God’s Church at best.
At this point we are going to go around in circles as you continue to spew false doctrine based upon limited experience and thinking by Protestants many of whom have a primary purpose of trying to refute Jesus Church. Well, God Bless you...