Why is it important to have both sacred scripture and sacred tradition? why should we trust the magisterium's interpretation? how would you explain this to someone who does not believe in the authority of the magisterium? what examples could you give them to show the importance of one clear interpretation?

What does the quote describe? “the closeness of the place, and the heat of the climate, added to the number in the ship, which was so crowded that each had scarcely room to turn himself, almost suffocated us….the shrieks of the women, and the groans of the dying, rendered the whole a scene of horror almost inconceivable.”