Well, the Bible exists. But the question is if it is based on a true story......
A certain book is considered to be "Scripture" by a certain group and in the group, the meaning is not confusing. However, to someone who comes along an picks up the book, it can appear very confusing. I think to look at the themes in helpful. For example, the Jewish people believe that they have a special call from God. What is the theme of the Hebrew Scriptures? Here's some themes:
A.) A main theme is that God made promises to and blessed Abraham and his descendants.
B.) God kept His promises and helped the Jewish people such as the Exodus and defending against warrior nations.
C.) God is all-powerful and He is one. "I am the Lord your God". Creation (Genesis).
D.) Prophecy - including the Messianic prophecies
From D.) we can move to the themes of the Christian Bible. Christian themes:
A.) God came to us as a human (Jesus).
B.) Jesus is the Messiah.
C.) The Jewish truth about God is for all nations (the whole world).
D.) God forgives sins and the death and resurrection of Jesus forgives our sins and also gives evidence that Jesus is who He says He is.
(By the way, "Christ" is Greek for "Messiah"). I think that the Jewish movement called Christianity is still moving forward ("recovering from") Greek/Roman/pagan influences including the Roman Empire.
So, once one knows the main "themes" of the Scripture, some of the other things can be understood in context. Some things are intended to be literal and some things may not be, but their meaning is more important. For example, in Judaism, the belief that God created the universe is important. Whether this occurred exactly 5777 years ago may be less important. In fact, science tells us that the universe is about 14 billion years old but that does not change the important belief that all creation is from God.