Who Compiled the Old Testament?
The Church does not deny that there are ancient writings which are "apocryphal." During the early Christian era, there were scores of manuscripts which purported to be Holy Scripture but were not. Many have survived to the present day, like the Apocalypse of Peter and the Gospel of Thomas, which all Christian churches regard as spurious writings that don't belong in Scripture.
During the first century, the Jews disagreed as to what constituted the canon of Scripture. In fact, there were a large number of different canons in use, including the growing canon used by Christians. In order to combat the spreading Christian cult, rabbis met at the city of Jamnia or Javneh in A.D. 90 to determine which books were truly the Word of God. They pronounced many books, including the Gospels, to be unfit as scriptures. This canon also excluded seven books (Baruch, Sirach, 1 and 2 Maccabees, Tobit, Judith, and the Wisdom of Solomon, plus portions of Esther and Daniel) that Christians considered part of the Old Testament.
The group of Jews which met at Javneh became the dominant group for later Jewish history, and today most Jews accept the canon of Javneh. However, some Jews, such as those from Ethiopia, follow a different canon which is identical to the Catholic Old Testament and includes the seven deuterocanonical books (cf. Encyclopedia Judaica, vol. 6, p. 1147).
Needless to say, the Church disregarded the results of Javneh. First, a Jewish council after the time of Christ is not binding on the followers of Christ. Second, Javneh rejected precisely those documents which are foundational for the Christian Church -- the Gospels and the other documents of the New Testament. Third, by rejecting the deuterocanonicals, Javneh rejected books which had been used by Jesus and the apostles and which were in the edition of the Bible that the apostles used in everyday life -- the Septuagint.
The Apostles & the Deuteros
The Christian acceptance of the deuterocanonical books was logical because the deuterocanonicals were also included in the Septuagint, the Greek edition of the Old Testament which the apostles used to evangelize the world. Two thirds of the Old Testament quotations in the New are from the Septuagint. Yet the apostles nowhere told their converts to avoid seven books of it. Like the Jews all over the world who used the Septuagint, the early Christians accepted the books they found in it. They knew that the apostles would not mislead them and endanger their souls by putting false scriptures in their hands -- especially without warning them against them.
But the apostles did not merely place the deuterocanonicals in the hands of their converts as part of the Septuagint. They regularly referred to the deuterocanonicals in their writings. For example, Hebrews 11 encourages us to emulate the heroes of the Old Testament and in the Old Testament "Women received their dead by resurrection. Some were tortured, refusing to accept release, that they might rise again to a better life" (Heb. 11:35).
There are a couple of examples of women receiving back their dead by resurrection in the Protestant Old Testament. You can find Elijah raising the son of the widow of Zarepheth in 1 Kings 17, and you can find his successor Elisha raising the son of the Shunammite woman in 2 Kings 4, but one thing you can never find -- anywhere in the Protestant Old Testament, from front to back, from Genesis to Malachi -- is someone being tortured and refusing to accept release for the sake of a better resurrection. If you want to find that, you have to look in the Catholic Old Testament -- in the deuterocanonical books Martin Luther cut out of his Bible.
The story is found in 2 Maccabees 7, where we read that during the Maccabean persecution, "It happened also that seven brothers and their mother were arrested and were being compelled by the king, under torture with whips and cords, to partake of unlawful swine's flesh. . . . [B]ut the brothers and their mother encouraged one another to die nobly, saying, 'The Lord God is watching over us and in truth has compassion on us . . . ' After the first brother had died . . . they brought forward the second for their sport. . . . he in turn underwent tortures as the first brother had done. And when he was at his last breath, he said, 'You accursed wretch, you dismiss us from this present life, but the King of the universe will raise us up to an everlasting renewal of life'" (2 Macc. 7:1, 5-9).
One by one the sons die, proclaiming that they will be vindicated in the resurrection. "The mother was especially admirable and worthy of honorable memory. Though she saw her seven sons perish within a single day, she bore it with good courage because of her hope in the Lord. She encouraged each of them . . . [saying], 'I do not know how you came into being in my womb. It was not I who gave you life and breath, nor I who set in order the elements within each of you. Therefore the Creator of the world, who shaped the beginning of man and devised the origin of all things, will in his mercy give life and breath back to you again, since you now forget yourselves for the sake of his laws,'" telling the last one, "Do not fear this butcher, but prove worthy of your brothers. Accept death, so that in God's mercy I may get you back again with your brothers" (2 Macc. 7:20-23, 29).
This is but one example of the New Testaments' references to the deuterocanonicals. The early Christians were thus fully justified in recognizing these books as Scripture, for the apostles not only set them in their hands as part of the Bible they used to evangelize the world, but also referred to them in the New Testament itself, citing the things they record as examples to be emulated.
The Fathers Speak
The early acceptance of the deuterocanonicals was carried down through Church history. The Protestant patristics scholar J. N. D. Kelly writes: "It should be observed that the Old Testament thus admitted as authoritative in the Church was somewhat bulkier and more comprehensive than the [Protestant Old Testament] . . . It always included, though with varying degrees of recognition, the so-called Apocrypha or deutero-canonical books. The reason for this is that the Old Testament which passed in the first instance into the hands of Christians was . . . the Greek translation known as the Septuagint. . . . most of the Scriptural quotations found in the New Testament are based upon it rather than the Hebrew.. . . In the first two centuries . . . the Church seems to have accept all, or most of, these additional books as inspired and to have treated them without question as Scripture. Quotations from Wisdom, for example, occur in 1 Clement and Barnabas. . . Polycarp cites Tobit, and the Didache [cites] Ecclesiasticus. Irenaeus refers to Wisdom, the History of Susannah, Bel and the Dragon [i.e., the deuterocanonical portions of Daniel], and Baruch. The use made of the Apocrypha by Tertullian, Hippolytus, Cyprian and Clement of Alexandria is too frequent for detailed references to be necessary" (Early Christian Doctrines, 53-54).
The recognition of the deuterocanonicals as part of the Bible that was given by individual Fathers was also given by the Fathers as a whole, when they met in Church councils. The results of councils are especially useful because they do not represent the views of only one person, but what was accepted by the Church leaders of whole regions.
The canon of Scripture, Old and New Testament, was finally settled at the Council of Rome in 382, under the authority of Pope Damasus I. It was soon reaffirmed on numerous occasions. The same canon was affirmed at the Council of Hippo in 393 and at the Council of Carthage in 397. In 405 Pope Innocent I reaffirmed the canon in a letter to Bishop Exuperius of Toulouse. Another council at Carthage, this one in the year 419, reaffirmed the canon of its predecessors and asked Pope Boniface to "confirm this canon, for these are the things which we have received from our fathers to be read in church." All of these canons were identical to the modern Catholic Bible, and all of them included the deuterocanonicals.
This exact same canon was implicitly affirmed at the seventh ecumenical council, II Nicaea (787), which approved the results of the 419 Council of Carthage, and explicitly reaffirmed at the ecumenical councils of Florence (1442), Trent (1546), Vatican I (1870), and Vatican II (1965).