The Greek word denotes, primarily, a straight rod; hence a rule or standard, by a reference to which the rectitude of opinions or actions may be decided. In the latter sense it is used in Ga 6:16; Php 3:16. In the same sense it was used by the Greek fathers. As the standard to which they sought to appeal on all questions was the will of God contained in the Scriptures of the Old and New Testaments, they came naturally to apply this term to the collective body of those writings, and to speak of them as the canon or rule. Canon is also equivalent to a list of catalogue, in which are inserted those books which contain the inspired rule of faith.

In order to establish the canon of Scripture, it must be shown that all the books are of divine authority; that they are entire and incorrupt; that it is complete without addition from any foreign source; and that the whole of the books for which divine authority can be proved are included. See BIBLE.

This word is derived from a Hebrew and Greek word denoting a reed or cane. Hence it means something straight, or something to keep straight; and hence also a rule, or something ruled or measured. It came to be applied to the Scriptures, to denote that they contained the authoritative rule of faith and practice, the standard of doctrine and duty. A book is said to be of canonical authority when it has a right to take a place with the other books which contain a revelation of the Divine will. Such a right does not arise from any ecclesiastical authority, but from the evidence of the inspired authorship of the book. The canonical (i.e., the inspired) books of the Old and New Testaments, are a complete rule, and the only rule, of faith and practice. They contain the whole supernatural revelation of God to men. The New Testament Canon was formed gradually under divine guidance. The different books as they were written came into the possession of the Christian associations which began to be formed soon after the day of Pentecost; and thus slowly the canon increased till all the books were gathered together into one collection containing the whole of the twenty-seven New Testament inspired books. Historical evidence shows that from about the middle of the second century this New Testament collection was substantially such as we now possess. Each book contained in it is proved to have, on its own ground, a right to its place; and thus the whole is of divine authority.

The Old Testament Canon is witnessed to by the New Testament writers. Their evidence is conclusive. The quotations in the New from the Old are very numerous, and the references are much more numerous. These quotations and references by our Lord and the apostles most clearly imply the existence at that time of a well-known and publicly acknowledged collection of Hebrew writings under the designation of "The Scriptures;" "The Law and the Prophets and the Psalms;" "Moses and the Prophets," etc. The appeals to these books, moreover, show that they were regarded as of divine authority, finally deciding all questions of which they treat; and that the whole collection so recognized consisted only of the thirty-nine books which we now posses. Thus they endorse as genuine and authentic the canon of the Jewish Scriptures. The Septuagint Version (q.v.) also contained every book we now have in the Old Testament Scriptures. As to the time at which the Old Testament canon was closed, there are many considerations which point to that of Ezra and Nehemiah, immediately after the return from Babylonian exile. (See Bible, Ezra, Quotations.)

CANON, a word used to denote the authorized catalogue of the sacred writings. The word is originally Greek, ?????, and signifies a rule or standard, by which other things are to be examined and judged. Accordingly, the same word has been applied to the tongue of a balance, or that small part which, by its perpendicular position, determines the even poise or weight, or, by its inclination, either, way, the uneven poise of the things which are weighed. Hence it appears, that as the writings of the Prophets, Apostles, and Evangelists contain an authentic account of the revealed will of God, they are the rule of the belief and practice of those who receive them. Canon is also equivalent to a list or catalogue, in which are inserted those books which contain the rule of faith.

For an account of the settling of the canon of Scripture, see Bible. The following observations of Dr. Alexander, in his work on the canon, proving that no canonical book of the Old or New Testament has been lost, may here be properly introduced.