Volume 10 of John Owen's collected works brings together three foundational treatises that lock together to form an unyielding defense of classical Reformed theology and the majesty of the Cross. Owen begins with ***A Display of Arminianism*** (1642), a groundbreaking work using side-by-side comparative columns to expose how human autonomy undermines sovereign grace, establishing that salvation originates entirely in God's initiative rather than fallen human free will. He then expands this into his masterpiece, ***The Death of Death in the Death of Christ*** (1647), where he meticulously demonstrates that Christ's atonement was not a mere hypothetical possibility contingent on human choice, but an all-sufficient, definite redemption that actually purchased faith, repentance, and complete salvation for His people. Finally, in ***A Dissertation on Divine Justice*** (1653), Owen grounds the necessity of the Cross in the very essence of God, arguing that punitive justice is an unchangeable, natural attribute of divine holiness—meaning God could not simply sweep sin under the rug, making Christ's substitutionary death the glorious, necessary meeting point of infinite justice and infinite love. Together, these three treatises show that because God's holiness demanded a real satisfaction, Christ accomplished a real redemption, securing an unshakable salvation for every believer.