Catholicism teaches that submission to the Pope is necessary for salvation, directly contradicting scripture.
One needs only to look at this from Pope Boniface VIII in an ex cathedra statement in his bull Unam Sanctam (A.D. 1302) and was later reaffirmed by subsequent popes and councils such as Vatican I.
Furthermore we declare, state, define, and pronounce that it is altogether necessary to salvation for every human creature to be subject to the Roman pontiff.[ Cited in Henry Bettenson, ed., Documents of the Christian Church (London: Oxford Univ., 1963), 116. Vatican I, after affirming that the bishops of Rome are the rightful rulers over the church to whom all Christians must submit in matters of faith and morals and discipline states, 'This is the teaching of Catholic truth, from which no one can deviate without loss of faith and salvation'; cited by Philip Schaff, The Creeds of Christendom (New York: Harper, 1877),11:263.]
Catholicism adds to scripture and we know what that means. I would ask you not to twist my words and make it look like I agree that Peter is the Rock upon which the church is built because I dont agree with that.
Yes, let's look. Here is what the Church believes, as can be found in the Catechism of the Catholic Church:
819 "Furthermore, many elements of sanctification and of truth" are found outside the visible confines of the Catholic Church: "the written Word of God; the life of grace; faith, hope, and charity, with the other interior gifts of the Holy Spirit, as well as visible elements." Christ's Spirit uses these Churches and ecclesial communities as means of salvation, whose power derives from the fullness of grace and truth that Christ has entrusted to the Catholic Church.
838 "The Church knows that she is joined in many ways to the baptized who are honored by the name of Christian, but do not profess the Catholic faith in its entirety or have not preserved unity or communion under the successor of Peter." Those "who believe in Christ and have been properly baptized are put in a certain, although imperfect, communion with the Catholic Church."
Catholicism adds to scripture and we know what that means.
True, the Church does not use Scripture exclusively, but also uses teachings of the Church handed down through the ages. The doctrine of sola scriptura itself is an addition to Scripture; and we all know what that means.
I would ask you not to twist my words
I did not twist your words. I simply posted that you said - that Cephas/Peter means rock.