Yet it was through the adaptation of this very chant to the delineation of episodes in religious history that the path to the opera was opened. The church slowly built up a ritual which offered no small amount of graphic interest for the eyes of the congregation. As ceremonials became more and more elaborate, they approached more and more closely the ground on which the ancient dramatic dance rested, and it was not long before they themselves acquired a distinctly dramatic character. It is at this point that the liturgical ancestry of the opera becomes quite manifest. The dance itself, at first an attempt to delineate dramatically by means of measured movement, and thus the origin of the art of dramatic action, was not without its place in the early church. The ancient pagan festivals made use of the dance, and the early Christians borrowed it from them. At one time Christian priests executed solemn dances before their altars just as their Greek predecessors had done. But in the course of time the dance became generally practised by the congregation and this gave rise to abuses. The authorities of the church abandoned it. But the feeling for it lingered, and in after years issued in the employment of the procession. When the procession left the sanctuary and displayed itself in the open air, something of the nature of the dance returned to it and its development into a dramatic spectacle was not difficult. According to Magnin[1] the lyric drama of the Middle Ages had three sources,--the aristocracy, religion and the people. Coussemaker finds that this lyric drama had in its inception two chief varieties, namely, the secular drama, and the religious or liturgical drama. "Each of these dramas," he says, "had its own particular subject matter, character, charms and style. The music, which formed an integral part of it, was equally different in the one from the other."[2] [Footnote 1: "Les Origines du Theatre Moderne ou Histoire du Genie Dramatique depuis le Premier Siecle jusqu'au XVIe." Paris, 1838.] [Footnote 2: "Histoire de l'Harmonie au Moyen Age." Paris, 1852.] The liturgical drama, which was chronologically the first of the two forms, originated, as we have noted, in the ceremonies of the Christian church, in the strong dramatic element which inheres in the mass, the Christmas fetes, and those of the Epiphany, the Palms and the Passion. These are all scenes in the drama of the sacrifice of the Redeemer, and it required but small progress to develop them into real dramatic performances, designed for the instruction of a people which as yet had no literature.