Book excerpt: Noel Perkin, a banker-turned-missionary, led Assemblies of God World Missions (AGWM) for more than thirty years (1927–59). His life exemplifies the missionary zeal historians have noted within the early Pentecostal movement. Perkin’s experience of the Holy Spirit and his experiences as a missionary in Argentina led him to create systems intended to empower others to fulfill Christ’s commission to make disciples of all nations. Perkin’s empowering leadership played a significant part in AGWM’s remarkable growth into a leading Pentecostal mission-sending agency which currently sends over 2,000 missionaries to 140 countries. As one of the principal architects of AGWM’s missiology and operation, Perkin transformed a two-person office relying on envelope boxes for its accounting system into a well-structured, strategic mission agency and laid a foundation for AGWM’s continued growth. Empowering Spirit, Empowering Structures uses the foundation of a biographical study to examine the concept of empowerment through Perkin’s life and the impact that Perkin and his missiology had and continues to have upon AGWM.