>>17747493
"The magisterium of the Catholic Church is the church's authority or office to give authentic interpretation of the word of God, "whether in its written form or in the form of Tradition". According to the 1992 Catechism of the Catholic Church, the task of interpretation is vested uniquely in the Pope and the bishops, though the concept has a complex history of development. Scripture and Tradition "make up a single sacred deposit of the Word of God, which is entrusted to the Church",[5] and the magisterium is not independent of this, since "all that it proposes for belief as being divinely revealed is derived from this single deposit of faith."

If you are wondering what Tradition is: it is believed to be the faithful and constant transmission of the teachings of the Apostles from one generation to the next. That "includes everything which contributes towards the sanctity of life and increase in faith of the People of God; and so the Church, in her teaching, life and worship [the Creeds, the Sacraments, the Magisterium, and the Holy Sacrifice of the Mass], perpetuates and hands on to all generations all that she herself is, all that she believes."