Walther Eichrodt was a German scholar who revived Old Testament theology in the early 20th century. He criticized previous approaches that focused only on the religious history of Israel and ignored the theological message of the OT. Eichrodt argued the historical-critical method could be used to understand both the history and the central theological message of the OT, which he identified as God's covenant relationship with humanity. His three-volume work developed this theme of the engagement between God and Israel, God and the world, and God and individuals. Eichrodt significantly influenced later OT scholars like Gerhard von Rad by emphasizing a unified theological framework for understanding the OT.