Then the Catholic church is built on the wrong rock.
The Rock that the church I'm part of is built on JESUS CHRIST.
Here, Paul identifies who petra is, and that is Christ. This link takes you to the Greek.
http://biblehub.com/text/1_corinthians/10-4.htm
1 Corinthians 10:1-4 For I do not want you to be unaware, brothers, that our fathers were all under the cloud, and all passed through the sea, and all were baptized into Moses in the cloud and in the sea, and all ate the same spiritual food, and all drank the same spiritual drink. For they drank from the spiritual Rock (petra) that followed them, and the Rock (petra) was Christ.
http://biblehub.com/text/romans/9-33.htm
Romans 9:30-33 What shall we say, then? That Gentiles who did not pursue righteousness have attained it, that is, a righteousness that is by faith; but that Israel who pursued a law that would lead to righteousness did not succeed in reaching that law. Why? Because they did not pursue it by faith, but as if it were based on works. They have stumbled over the stumbling stone, as it is written,“Behold, I am laying in Zion a stone of stumbling, and a rock (petra) of offense; and whoever believes in him will not be put to shame.”
http://biblehub.com/text/1_peter/2-8.htm
1 Peter 2:1-8 So put away all malice and all deceit and hypocrisy and envy and all slander. Like newborn infants, long for the pure spiritual milk, that by it you may grow up into salvation— if indeed you have tasted that the Lord is good.
As you come to him, a living stone rejected by men but in the sight of God chosen and precious, you yourselves like living stones are being built up as a spiritual house, to be a holy priesthood, to offer spiritual sacrifices acceptable to God through Jesus Christ. For it stands in Scripture: “Behold, I am laying in Zion a stone, a cornerstone chosen and precious, and whoever believes in him will not be put to shame.”
So the honor is for you who believe, but for those who do not believe,
“The stone that the builders rejected has become the cornerstone,”
and
“A stone of stumbling, and a rock (petra) of offense.”
They stumble because they disobey the word, as they were destined to do.
All occurrences of *petra* in the Greek.
881 The Lord made Simon alone, whom he named Peter, the “rock” of his Church. He gave him the keys of his Church and instituted him shepherd of the whole flock. “The office of binding and loosing which was given to Peter was also assigned to the college of apostles united to its head.” This pastoral office of Peter and the other apostles belongs to the Church’s very foundation and is continued by the bishops under the primacy of the Pope.Sure different than what Augustine and many OTHER Early Church Fathers taught; isn't it!!882 The Pope, Bishop of Rome and Peter’s successor, “is the perpetual and visible source and foundation of the unity both of the bishops and of the whole company of the faithful.” “For the Roman Pontiff, by reason of his office as Vicar of Christ, and as pastor of the entire Church has full, supreme, and universal power over the whole Church, a power which he can always exercise unhindered.”
883 “The college or body of bishops has no authority unless united with the Roman Pontiff, Peter’s successor, as its head.” As such, this college has “supreme and full authority over the universal Church; but this power cannot be exercised without the agreement of the Roman Pontiff.”
Likewise I accept Sacred Scripture according to that sense which Holy mother Church held and holds, since it is her right to judge of the true sense and interpretation of the holy scriptures; nor will I ever receive and interpret them except according to the unanimous consent of the fathers. — http://mb-soft.com/believe/txs/firstvc.htm
Yet as the Dominican cardinal and Catholic theologian Yves Congar O.P. states,
Unanimous patristic consent as a reliable locus theologicus is classical in Catholic theology; it has often been declared such by the magisterium and its value in scriptural interpretation has been especially stressed. Application of the principle is difficult, at least at a certain level. In regard to individual texts of Scripture total patristic consensus is rare...One example: the interpretation of Peter’s confession in Matthew 16:16-18. Except at Rome, this passage was not applied by the Fathers to the papal primacy; they worked out an exegesis at the level of their own ecclesiological thought, more anthropological and spiritual than juridical. — Yves M.-J. Congar, O.P., p. 71
And Catholic archbishop Peter Richard Kenrick (1806-1896), while yet seeking to support Peter as the rock, stated that,
“If we are bound to follow the majority of the fathers in this thing, then we are bound to hold for certain that by the rock should be understood the faith professed by Peter, not Peter professing the faith.” — Speech of archbishop Kenkick, p. 109; An inside view of the vatican council, edited by Leonard Woolsey Bacon.
Your own CCC allows the interpretation that, “On the rock of this faith confessed by St Peter, Christ build his Church,” (pt. 1, sec. 2, cp. 2, para. 424), for some of the ancients (for what their opinion is worth) provided for this or other interpretations.
Yikes!!