Jack Hayford (June 25, 1934 – January 8, 2023) was an American preacher, author, and Pentecostal leader whose calling from God transformed worship and ministry within the Church of the Foursquare Gospel and beyond for over six decades. Born in Los Angeles, California, to Jack Hayford Sr., a former military officer turned switchman, and Anita Dolores Farnsworth, a Bible teacher, he faced life-threatening illness as an infant and polio at age four, both miraculously healed through prayer, igniting his lifelong passion for God’s power. He graduated from L.I.F.E. Bible College in 1956 and earned a second bachelor’s degree from Azusa Pacific University in 1970, grounding his ministry in practical theology. Hayford’s calling from God was affirmed in 1969 when he became pastor of First Foursquare Church of Van Nuys—later The Church on the Way—growing it from 18 members to over 10,000 by the 1980s, serving until 1999 with a brief return after his successor’s death in 2003. Ordained in 1956, he preached a balanced gospel, emphasizing the Holy Spirit’s vitality, notably through his hymn “Majesty” (1978) and over 600 songs, alongside founding The King’s University in 1997 and serving as Foursquare president (2004–2009). His sermons and over 50 books, like Worship His Majesty, called believers to Spirit-filled living and unity across denominations. Married twice—first to Anna Marie Smith in 1954, with four children (Rebecca, Jack III, Mark, Christa), until her death in 2017, then to Valerie Lemire in 2018—he passed away at age 88 in Los Angeles, California.