Kreeft claims that the Sacred Tradition is the essential thing in the Christian faith because it features all dogmas that constitute the essence of the Catholic Church. The Sacred Tradition foregrounds all aspects of the belief in God, the authority of the divine power, the essential characteristics of spirituality, and the doctrinal background of the Christian religion.
It is described in the sacred books that unite all Christians and allow them to learn the divine laws once revealed to humankind. Moreover, the Sacred Tradition unites all Christian congregations, which means that all Christians, regardless of their church affiliation, believe in the same God and belong to one religious group.
It makes the differences between the Catholics and the Protestants less severe because these churches still share the same principles described in the Sacred Tradition. In addition, the Sacred Tradition establishes the authority of the Christian Church and foregrounds its status in the questions of morality and spirituality.