The Bible was written by men guided by the Holy Spirit so that every jot and tittle is the way God intended it to be. Since it is "god-breathed" it is absolute truth. Sure, metaphors and symbolism are used along with many other literary devices. And of course one must have a complete knowledge of the original languages to get an absolutely precise interpretation.
I believe in the Bible is found the absolute moral and spiritual truth. I also believe God has included many hidden secrets in the Bible for those who want to search them out.
"It is the glory of God to conceal a thing, but the honor of kings to search out a matter." Proverbs 25:2