Biblia Hebraica refers to the Hebrew Bible, which is a collection of ancient texts sacred in Judaism and significant in Christianity. It consists of three main parts: the Torah (the first five books), the Nevi'im (the Prophets), and the Ketuvim (the Writings). The texts are primarily written in Hebrew, with some portions in Aramaic. The most widely used edition is the Biblia Hebraica Stuttgartensia, published in 1977, which is based on the Leningrad Codex, the oldest complete manuscript of the Hebrew Bible. This edition serves as a critical text for scholars and is essential for biblical studies, translations, and theological research.