Bishop William James McDuffie was born and raised in Huntington Station, New York (Long Island). He is the fifth of seven children of the late Reverend James S. McDuffie and the late Mother Edna M. McDuffie. Called to ministry at a young age, he was licensed in 1985, and subsequently ordained as a minister of the Gospel in the Church of God in Christ in 1988 under the auspices of Pastor Joseph W. Usry.

In 2001, under a mandate from the Lord, the Bishop established William McDuffie Ministries (WMM), Inc. which consists of several anointed ministries to include Seed of Abraham Christian Center International (SACCI) of Sierra Vista, Arizona. WMM and SACCI are nondenominational, multicultural, full-Gospel, Word of Faith ministries. The mission of WMM and SACCI is to teach the Body of Christ how to submit to and effectively apply the Word of God (Truth), so that each member will experience success in every aspect of the abundant life.

Bishop McDuffie is married to the bride of his youth, Lady Yvette of Huntington, New York, who faithfully serves with him in ministry as Co-founder and Deputy Chief Overseer of WMM and SACCI. He and his wife reside in Southern Arizona and are the proud parents of two awesome children, William J. McDuffie II, a United States Marine Sergeant, and Brittanie Y. McDuffie, a Staff Sergeant in the U.S. Air Force.

In addition to his biological children, Bishop McDuffie is mentoring and developing many spiritual sons and daughters both nationally and internationally. Beyond his domestic responsibilities, he is the Chief Overseer of 180 churches in the East African countries of Kenya, Uganda, Tanzania and Burundi. An adamant believer in covenant relationships, Bishop McDuffie is, at the same time, a spiritual son of the Most Reverend Doctor Richard B. Peoples, Sr., the Presiding Bishop of Faith Outreach Christian Life Center of Hephzibah, GA.

In December 2006, Bishop McDuffie retired from the United States Army after nearly 25 years of combined active and reserve service. He is a graduate of numerous highly technical courses and several military leadership schools to include the United States Army Sergeants Major Course and the United States Army First Sergeants Course. He holds an Associates of Applied Science degree in Electronic Technology from Cochise College of Sierra Vista, AZ, and a Bachelor of Science degree in Business Administration from Touro University International of Cypress, CA. In 2008, Bishop McDuffie graduated summa cum laude from Trident University (formerly Touro University) with a Master of Science in Business Administration (MBA).

In August 2011, Bishop McDuffie accepted the ascendancy to the episcopal order and was consecrated as a Bishop in the Lord’s Church by a College of Bishops on November 12, 2011. He was simultaneously installed as the International Presiding Bishop and Chief Overseer of Seed of Abraham Christian Center International, Incorporated.