I know there are books mentioned throughout the Bible not in the Bible, but they are by no means lost books. God decided which books would go into the Bible. "Lost" gives the impression we were supposed to have it and can't have it because they are "lost". However, this is a false presumption, God just chose not to place those books in the Holy Bible.

Those who state that books were lost, must make the following argument. "God was only able to preserve 66 books." Now does that make sense? "Is anything too difficult for the Lord? Is anything impossible for God? Was God, Who created the universe out of nothing (Psalm 33:6), not able to keep more than 66 books in print? Of course, He could, and He did. He chose exactly which prophets, people, and events He wanted us to know about.

There could be several reasons why God chose not to place some of books in the Bible, but just because the Bible mentions a book it does not mean that God intended for it to be in the Bible. The Bible itself points out that some of it's events are recorded in secular sources.

For instance, Esther 10:2 says, "
And all the acts of his power and of his might, and the declaration of the greatness of Mordecai, whereunto the king advanced him, are they not written in the book of the chronicles of the kings of Media and Persia?” This was the official diary and record of the Persian court. (See also Esther 2:23; 6:1).

The Chronicle books regarding the Medes and Babylonians (Persia) were not recordings of the Jews themselves, therefore they were not needed to be placed in the book. Mordecai was just mentioned as he became a the king of Persias next in command.

The New Testament writers also quoted secular authors: Acts 17:28 says, "
For in him we live, and move, and have our being; as certain also of your own poets have said, For we are also his offspring.”

P
aul also mentions other prophets, Titus 1:12-13 says, "One of themselves, even a prophet of their own, said, The Cretians are alway liars, evil beasts, slow bellies. This witness is true. Wherefore rebuke them sharply, that they may be sound in the faith;”

We understand however, that when he quotes from these heathen poets, Paul is not endorsing everything in their writings. Paul also mentions a letter to the Corinthians which we don't have. We don't have it because we don't need it.

If any books had been deleted from the collection of Scripture that the Jews possessed, the coming of Jesus Christ into the world provided an excellent opportunity for God to set the record straight. Yet Jesus never once condemned or rebuked the Jews for not having the right number of books in their Old Testament. Jesus quoted extensively from the Old Testament and He never once mentions or quotes from a book that we do not possess.

The truth is this, the 66 books of the Bible are all that God wanted to be placed in His sacred book, He did not omit any because He is trying to hide something from us. He placed every book where it is for a reason and we need not question His reasoning. He knows what we need and everything we need is contained in the 66 books that we possess.