Most of the Bible was judged canonical—divinely inspired—soon after it was written. In the Old Testament, the writings of Moses were placed in the Ark of the Covenant while Moses was still alive.
- “And it came to pass, when Moses had made an end of writing the words of this law in a book, until they were finished, That Moses commanded the Levites, which bare the ark of the covenant of the Lord, saying, Take this book of the law, and put it in the side of the ark of the covenant of the Lord your God, that it may be there for a witness against thee.” (Deuteronomy 31:24-26).
The Prophet Daniel acknowledged the Book of Jeremiah as canonical (Daniel 9:2). The Prophet Ezekiel acknowledged the Book of Daniel as canonical (Ezekiel 28:3).
When it come to the Old Testament canon, it was authenticated by no less of an authority than Jesus Christ Himself. In Luke 24:44, Jesus explains to His disciples: “These [are] the words which I spake unto you, while I was yet with you, that all things must be fulfilled, which were written in the law of Moses, and [in] the prophets, and [in] the psalms, concerning me.”
Unlike today, in Jesus’ day, the Old Testament was divided into twenty-four books and three divisions. These divisions were: The Law, The Prophets, and The Psalms. Notice, Jesus declared the whole Old Testament canonical by referring to all three divisions!