Origen
Catena Aurea · Lukasevangelium 1
Forasmuch as many have taken in hand to set forth in order a declaration of those things which are most surely believed among us, Even as they delivered them unto us, which from the beginning were eyewitnesses, and ministers of the word: It seemed good to me also, having had perfect understanding of all things from the very first, to write unto thee in order, most excellent Theophilus, That thou mightest know the certainty of those things, wherein thou hast been instructed.
(Hom. i. in Luc.) The effect upon his own mind, St. Luke explains by the expression, of the things which have been fully accomplished among us, i. e. have had their full manifestation among us, (as the Greek word πεπληροφορημένων signifies, which the Latin cannot express in one word,) for he had been convinced of them by sure faith and reason, and wavered not in any thing.