And they contain the "Apocrypha" or Deuterocanonical books of the OT: Tobit, Judith, Wisdom, Sirach, Baruch and 1 and 2 Maccabees.
Third Council of CarthageThe story in 2 Macabbees 7 of the mother who watches her 7 sons tortured to death while hoping in their resurrection is mentioned in Paul's Scriptural recapitulation of salvation history.Canon 24. Besides the canonical Scriptures, nothing shall be read in church under the name of divine Scriptures. Moreover, the canonical Scriptures are these: Genesis, Exodus, Leviticus, Numbers, Deuteronomy, Joshua the son of Nun, Judges, Ruth, the four books of the Kings,(a) the two books of Chronicles, Job, the Psalms of David, five books of Solomon,(b) the book of the Twelve [minor] Prophets, Isaiah, Jeremiah, Ezekiel, Daniel, Tobias, Judith, Esther, the two books of Ezra,(c) and the two books of the Maccabees. The books of the New Testament: the Gospels, four books; the Acts of the Apostles, one book; the epistles of the apostle Paul, thirteen; of the same to the Hebrews, one epistle; of Peter, two; of John the apostle, three; of James, one; of Jude, one; the Revelation of John. Concerning the confirmation of this canon, the Church across the sea shall be consulted. On the anniversaries of martyrs, their acts shall also be read.(d)
Hebrews 11:35Women received back their dead, raised to life again. Others were tortured and refused to be released, so that they might gain a better resurrection.
"All confess that Malachi was the last Jewish prophet. Between Malachi and John the Baptist, no other Jewish prophet arose, but the writers of the apocryphal books lived after Malachi."
When Paul dealt with the Jews at Rome he tried to convince them “out of the law of Moses and the prophets.” (Acts 28:23).
From these we see that the major assertion is true, that the whole OT was given to us by God’s prophets.
There is no part of the OT which was not given by the prophets.