From An Essay on the Development of Christian Doctrine
by Venerable John Henry Newman

The whole Bible, not its prophetical portions only, is written on the principle of development. As the Revelation proceeds, it is ever new, yet ever old. St. John, who completes it, declares that he writes no "new commandment unto his brethren," but an old commandment which they "had from the beginning." And then he adds, "A new commandment I write unto you." The same test of development is suggested in our Lord's words on the Mount, as has already been noticed, "Think not that I am come to destroy the Law and the Prophets; I am not come to destroy, but to fulfil." He does not reverse, but perfect, what has gone before. Thus with respect to the evangelical view of the rite of sacrifice, first the rite is enjoined by Moses; next Samuel says, "to obey is better than sacrifice;" then Hosea, "I will have mercy and not sacrifice;" Isaiah, "Incense is an abomination unto me;" then Malachi, describing the times of the Gospel, speaks of the "pure offering" of wheatflour; and our Lord completes the development, when He speaks of worshipping "in spirit and in truth." If there is anything here left to explain, it will be found in the usage of the Christian Church immediately afterwards, which shows that sacrifice was not removed, but truth and spirit added.