Authority…
surely an authority is necessary to impart decision to what is vague –An Essay on the Development of Christian Doctrine
Yes, so…
Reasons shall be given in this Section for concluding that, in proportion to the probability of true developments of doctrine and practice in the Divine Scheme, so is the probability also of the appointment in that scheme of an external authority to decide upon them, thereby separating them from the mass of mere human speculation, extravagance, corruption, and error, in and out of which they grow. This is the doctrine of the infallibility of the Church; for by infallibility I suppose is meant the power of deciding whether this, that, and a third, and any number of theological or ethical statements are true. –An Essay on the Development of Christian Doctrine
This is why we read…