“Sola scriptura does not nullify the concept of church traditions.”
I would think not since this concept was foreign to the early Church. We do not see this concept at all in the early liturgical practice of the Church. Search as one might among the records of the Councils and Synods and even the writings of the Fathers and we find that an early origin of such a belief or practice is absent. Surely we do see the Scriptures being quoted to lend support to teachings found in pastoral letters or doctrinal directives but never independent of Sacred Tradition or the authority of the Magisterium.
“Rather, sola scriptura gives us a solid foundation on which to base church traditions.”
To the early Church they were only used as subsequent evidence of doctrines or teaching but never as the sole source of doctrine or pastoral teaching but instead in conjunction with the Magisterium and Sacred Tradition. So historically the concept of Sola Scriptura is a modernist idea based on the lack of any other authority like the Church which Protestants rejected; even though the Bible speaks to the Church as having all authority including even the power to bind and to loose. This is taught among them even apart from the Magisterium and the apostolic deposit of Sacred Tradition even though the Bible clearly contradicts such a departure from biblical truth. Sola Scriptura is thus not a “solid foundation” but instead a weakened foundation having been removed from the whole of the Church, the Scriptures, the Sacred Tradition and the Magisterium which describes a solid foundation of rock instead of a weakened foundation of sand that can be blown about by the whims of the reader in his eisegetical fanciful imagination. Wrested from the whole of the foundation of truth the truth becomes what ever one can imagine and the Bible becomes a collection of proof texts to guide the reader to destruction or to be used by the heretics to separate the seeking or the faithful from the truth.
“There are many practices, in both Catholic and Protestant churches, that are the result of traditions, not the explicit teaching of Scripture. It is good, and even necessary, for the church to have traditions. Traditions play an important role in clarifying and organizing Christian practice. At the same time, in order for these traditions to be valid, they must not be in disagreement with Gods Word. They must be based on the solid foundation of the teaching of Scripture.”
The Church agrees that the teaching of the Church must not disagree with Scriptures. We further would agree that not all teaching of the Church needs to be explicitly gleaned from Scriptures. Where we would strongly disagree would be in the assumption that the solid foundation for practices and doctrine comes solely from Scriptures independent of Sacred Tradition and the Magisterium.
“The problem with the Roman Catholic Church, and many other churches, is that they base traditions on traditions which are based on traditions which are based on traditions, often with the initial tradition not being in full harmony with the Scriptures.”
I do not know about the many other churches but I do know that this statement is totally false when speaking of Christ’s Church the Catholic Church. There is no doctrine or teaching of the Church that is not in complete harmony with Scriptures whether implicitly or explicitly.
“That is why Christians must always go back to sola scriptura, the authoritative Word of God, as the only solid basis for faith and practice.”
Of course this defense of Sola Scriptura as not made the case for the conclusion it reaches. The Word of God is not expressed solely in its written form but also in its oral form which is the apostolic deposit of Sacred Tradition. But even this is not sufficient because for an infallible understanding of Scriptures there must be an infallible interpreter with the authority from God Himself to teach and that is the Catholic Church represented by the foundation of the bishops who are the successors of the original twelve disciples and also of the leadership of Christ’s prime minister which is the successor of St. Peter and sit in his seat of authority presiding over and in accordance with the Magisterium. It is the Holy Spirit that ensures that the infallible truth in matters of faith and morals are fully contained in the teaching and doctrines of the Church. God bless!