Leadership Mainstream

Rich Gregory

Pastor, Elder

Rich grew up in a pastor’s home in the state of Michigan before attending college in South Carolina. After graduating, he and his wife, Michelle, moved to Southern California in 2007 to pursue studies at The Master’s Seminary. Currently, Rich serves as senior vice-president of administration at The Master’s Seminary and pastors the Mainstream fellowship group at Grace Church. Rich holds a B.A. from Bob Jones University, and an M.Div. and D.Min. from The Master’s Seminary.
Brad Armstrong has been serving as an elder of Grace Community Church since 1995 and serves primarily in the Mainstream fellowship group. He also enjoys ministering to our missionaries by providing vision on the ECHO committee.

Irv Busenitz


Irv grew up in central Kansas and, after completing undergraduate studies in Omaha, Nebraska, came to California with his wife Karen to attend Talbot Seminary. During residency for his Master of Divinity studies, he served as a youth pastor and associate pastor in Downey, California. Following his seminary training, Irv joined the Bible and Old Testament faculty at Talbot, and from 1977-1986 served as the Director of their Valley Campus based on the campus of Grace Church. He became a founding member of The Master’s Seminary in 1986, where he continues as the Vice President for Academic Administration and Professor of Bible and Old Testament. Irv serves as an Elder and as chair of ECHO, while his wife Karen is active with Seminary Wives’ Discipleship Program. They have been married for over 40 years and are the parents of two married sons and six grandchildren.

Brian Milam


Brian grew up near Kansas City, Missouri, and after completing his undergraduate degree, he came to The Master’s Seminary in 1989 where he earned his M.Div. degree. Brian has been on staff at Grace Community Church for twenty-eight years, and for the past sixteen years, has served as an associate pastor of GMI (Grace Ministries International), a ministry that provides care and support to our faithful missionaries. Brian also serves on the ECHO (Elders’ Council Handling Outreach) board, as an elder in the Mainstream fellowship group, and as an adjunct professor at The Master’s Seminary. Brian and his wife, Carole, met at The Master’s University, married in 1991, and have been serving together in ministry since. They have two children.