Avoid many kinds of texts... Martin Luther

In the first place, let the preacher above all be careful to avoid many kinds of or various texts and forms of the Ten Commandments, the Lord's Prayer, the Creed, the Sacraments, etc., but choose one form to which he adheres, and which he inculcates all the time, year after year. For [I give this advice, however, because I know that] young and simple people must be taught by uniform, settled texts and forms, otherwise they easily become confused when the teacher to-day teaches them thus, and in a year some other way, as if he wished to make improvements, and thus all effort and labor [which has been expended in teaching] is lost.

Martin Luther

From:  Preface to the Small Catechism

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Reasonable Christian Blog Glory be to the Father, and to the Son : and to the Holy Ghost; Answer. As it was in the beginning, is now, and ever shall be : world without end. Amen. 1662 Book of Common Prayer