Rev. Dr. J. David Muyskens (1934?2017) graduated from Northwestern College (Iowa), Central College (Iowa), Western Theological Seminary (Michigan), and Princeton Theological Seminary (New Jersey) with a Doctor of Ministry. He served as pastor of three churches in New Jersey: Pottersville Reformed Church; First Reformed Church, Union City; and First Reformed Church, New Brunswick. Muyskens retired to Grand Rapids, Michigan, where he was a spiritual director; member of Contemplative Outreach; and practiced centering prayer, a Protestant expression of contemplative prayer. He authored two books on centering prayer: Forty Days to a Closer Walk with God: The Practice of Centering Prayer and Sacred Breath: 40 Days of Centering Prayer, both published by Upper Room Books.