Actually, there are several ways in which it is meaningful. Firstly, this book of books is replete with timeless principles of living that ensure that we can live a happy, full and blessed life.
There is profitable instruction throughout its pages in regard to how to do this. There are tried and true laws of health, diet, cleanliness, morality, relationships and many others that are there for us to glean.
The reason that this is still pertinent, is because in all that we have accomplished, we, as a people, have not changed nor have we been able to conquer our own human nature autonomously. Our character, the way we are and how we act, has remained the same.
This being the case, the God who made us and knows us, understands exactly what we need to have a good life. Because of this, the instruction that was given millennia ago, has not needed to change and is as appropriate for us today as the day it was written.
Secondly, there are prophecies that have yet to come about. The ones that have, are a proof of the veracity of the Word of God. The rest are now being fulfilled before our very eyes and will continue to come to pass in the near future.
As what God has foretold comes to fruition, it will announce His coming Kingdom and bring many to repentance. His Purpose will surely be seen as the Way to follow and to be.
The Bible shows the Plan of God and how we can live a better life right now. How could the Bible be any more relevant?