But I am better pleased that the Truth Himself, like a good Shepherd, and therefore a good Teacher, hath in a certain measure reminded us how we ought to understand His words, “He shall go in and out, and find pasture,” when He added in the sequel, “The thief cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly.” For He seems to me to have meant, That they may have life in coming in, and have it more abundantly at their departure. For no one can pass out by the door—that is, by Christ—to that eternal life which shall be open to the sight, unless by the same door—that is, by the same Christ—he has entered His church, which is His fold, to the temporal life, which is lived in faith.

— St. Augustine, Tractate XLV