Who wrote the 'Hexapla', a comparative study of the Old Testament?

The 'Hexapla' is a significant work written by Origen, an early Christian theologian and scholar. This text is a critical edition of the Old Testament that presents six parallel columns of biblical texts, including the Hebrew text and various Greek translations, most notably the Septuagint. Origen’s aim was to facilitate study and comparison among these texts, providing scholars and theologians with an invaluable resource for understanding the nuances of the Old Testament. His work demonstrated a thorough commitment to biblical scholarship and textual analysis, which was instrumental in early Christian theology.

In contrast, the other individuals mentioned—Clement of Alexandria, Tertullian, and Justin Martyr—each contributed to early Christian thought and literature, but none are connected with the creation of the 'Hexapla'. Clement focused on the integration of Greek philosophy and Christian doctrine, Tertullian is known for his apologetic and theological writings, and Justin Martyr is celebrated for his defense of Christianity and its teachings before Roman authorities.