Frederick Charles Jennings (December 3, 1847 – April 17, 1948) was an English-born American preacher, author, and Bible teacher whose ministry within the Plymouth Brethren movement spanned over seven decades, focusing on scriptural exposition and Christian living. Born in Southampton, England, to a Christian family, he immigrated to the U.S. in 1871, settling in New York City after a brief stay in Canada. Converted in his youth, he initially worked in business—first with a shipping firm in England, then as an accountant in New York—before dedicating himself fully to ministry around age 30, influenced by Brethren teachings. Jennings’ preaching career unfolded through itinerant ministry across the U.S., Canada, and England, delivering sermons known for their depth and poetic insight into Scripture. Based in Plainfield, New Jersey, he spoke at Brethren assemblies and conferences, emphasizing Christ’s glory and prophetic themes, as seen in works like Studies in Isaiah (1935) and The Seven Letters from Heaven (1937). A prolific writer, he authored over 20 books, including Satan: His Person, Work, Place and Destiny (1921) and Old Groans and New Songs (1909), though his 1927 work The Human Body stirred controversy for questioning bodily resurrection, a view later debated among peers. Married to Martha Ann Borst in 1894, with whom he had six children—Grace, Esther, Ruth, Frederick, Vernon, and Margaret—he died at age 100 in Plainfield, New Jersey.