The Prophets

"The Lord your God will raise up for you a prophet like me from among your own brothers. You must listen to him. This is what you requested from the Lord your God at Horeb on the day of the assembly when you said, 'Let us not continue to hear the voice of the Lord our God or see this great fire any longer, so that we will not die!' Then the Lord said to me, 'They have spoken well. I will raise up for them a prophet like you from among their brothers. I will put My words in his mouth, and he will tell them everything I command him. I will hold accountable whoever does not listen to My words that he speaks in My name. But the prophet who dares to speak a message in My name that I have not commanded him to speak, or who speaks in the name of other gods—that prophet must die.' You may say to yourself, 'How can we recognize a message the Lord has not spoken?' When a prophet speaks in the Lord's name, and the message does not come true or is not fulfilled, that is a message the Lord has not spoken. The prophet has spoken it presumptuously. Do not be afraid of him. (Deuteronomy 18:15-22 HCSB)

In the first year of Darius the son of Ahasuerus, by descent a Mede, who was made king over the realm of the Chaldeans - in the first year of his reign, I, Daniel, perceived in the books the number of years that, according to the word of the LORD to Jeremiah the prophet, must pass before the end of the desolations of Jerusalem, namely, seventy years. (Daniel 9:1-2 ESV)

How the rest of the Old Testament, the Prophets and the Writings were canonized were obscure. Daniel the Prophet referred to a collection of books (Daniel 9:1-2). According to Jewish tradition, the entire Old Testament was canonized by the Great Synagogue, led by Ezra the Scribe.