I read books that are more than 2000 years old (the Old Testament, Homer, Herodotus, Thucydides, Plato, Aristotle), but admittedly mostly in translations.
The Septuagint (Old Greek) is the earliest translation of the Hebrew Bible, produced in Alexandria, Egypt, starting in the 3rd century BC.
Homer , possibly born c. 8th century BC was an ancient Greek poet who is traditionally credited as the author of the Iliad and the Odyssey, two epic poems that are foundational works of ancient Greek literature.
The Epic of Gilgamesh is an epic from ancient Mesopotamia that is the world’s oldest surviving example of narrative literature. The literary history of Gilgamesh begins with five Sumerian poems about Gilgamesh, king of Uruk, some of which may date back to the Third Dynasty of Ur (c. 2100 BC).