θεός

The Greek term theos is a foundational word in the New Testament, carrying a broad semantic range that encompasses both the one true God and, in some contexts, pagan deities or even human authorities. Primarily, however, it refers to the God of Israel, the Father of Jesus Christ, and the Holy Spirit. Its usage reflects a rich theological understanding that develops from the Old Testament concept of Yahweh, emphasizing His sovereignty, holiness, and redemptive plan for humanity. In many instances, theos highlights God's active involvement in human history and His relationship with His people.

This term is central to understanding Christian theology, appearing in nearly every book of the New Testament. It is used to describe God's attributes, such as His love, righteousness, and mercy, and His roles as creator, judge, and savior. The frequent pairing of "God our Father" or "God the Father" underscores the personal and relational aspect of God within Christian faith. Theos also features prominently in discussions of salvation, the resurrection, and the establishment of God's kingdom, positioning God as the ultimate source and goal of all things.

While occasionally used in a general sense for any deity or even metaphorically for human rulers, the overwhelming majority of its occurrences in the New Testament refer to the one true God. The shift from a polytheistic pagan environment to a monotheistic Christian worldview is evident in the emphasis on the uniqueness and supremacy of God as revealed in Jesus Christ. Theos, therefore, functions as a linchpin for conveying the core doctrines of Christianity, including the Trinity, the divine nature of Christ, and the outpouring of the Holy Spirit, all of whom are understood as God.