This Bible Study presents a cohesive biblical theology of God as the Divine Warrior, a central image revealing His righteous power, justice, and mercy. Divine warfare is not a relic of primitive religion, but instead a profound expression of God's sovereign authority and redemptive purpose throughout Scripture. Beginning with the Exodus and Red Sea deliverance, God is shown fighting for His people through miraculous intervention, teaching them to trust in His power: "The Lord will fight for you." This theme continues in Joshua's encounter with the "Commander of the Lord's Army," identified as the pre-incarnate Christ, and in the recurring title, "Lord of Hosts" (Yahweh Sabaoth), the Sovereign Commander of heaven's armies who rules over all earthly and cosmic powers. The later sections (Isaiah, Deuteronomy, Revelation) deepen this portrayal of wicked nations, expressing divine justice against evil. His sovereign right to judge and to show mercy, as Paul explains in Romans, reflects His absolute holiness. The vision culminates in Revelation 19 where Christ appears as the victorious Warrior-King who defeats evil, vindicating the righteous, establishing eternal peace. Divine warfare reveals God's redemptive justice. Christ's battle is not for destruction, but for the renewal of creation and the triumph of His Kingdom. God's might in battle embodies His sovereign justice, covenantal love, and ultimate victory over evil, calling His people to awe, trust, and worship.