We see no difficulty, then, as far as the Sacred Text is concerned, in supposing a condition of created existence prior to the period of the Six Days. But since this opinion is the foundation on which our whole argument rests, we should wish to show, moreover, even at the risk of being tedious, that it has been put forward and defended by the most eminent writers in every age of the Church. Amongst the early Fathers, Saint Basil reasons after this manner when commenting upon the passage, “There was evening and there was morning the first day:”--“The evening is the common term of day and night; and, in like manner, the morning is the point of union between night and day. Wherefore, in order to signify that to the day belonged the prerogative of being the first begotten, the sacred writer first commemorates the close of day, and afterward the close of night; implying thereby that _the day was followed by the night_. As to the condition of the world _before the formation of light_, that is not called Night, but simply Darkness; whereas that period which is distinguished from day and opposed to it, is called night.”[119] This great Doctor, therefore, teaches that the First Day began with a period of light which is called day, and ended with a period of darkness which is called night; and he recognizes a previous state of existence which was no part of the First Day. So, too, Saint Chrysostom, in his third Homily upon Genesis, lays down that the Earth was first created a rude and shapeless mass, without form or ornament; that _afterward_ light was made, and that, _with the creation of light, the First Day began_.[120] In the Western Church, Saint Ambrose adopts the same line of interpretation. He sets forth that God first created the world, in the beginning; and afterward during the Six Days furnished and adorned it; just as a skilful workman first lays the foundation of a building, and afterward raises the superstructure, and superadds the ornament. And elsewhere, he says that, when the voice of God went forth, “Let light be made,” in the same moment the First Day began. It follows, therefore, that the world existed before the beginning of the First Day. In another place he gives a new turn to the same idea, telling us that in the beginning God made the world; and with the world, time began. But not with time did the First Day begin: for the First Day is not the beginning of time, it is rather an epoch of time.[121]