Nash is married to Joyce Nyokabi Gichimu. Joyce is a pre-school teacher and a Children's Teacher at Cornerstone Family Chapel. Nash and Joyce have two children: Kevin Griffith Wachira and Praise Wanjiru. Nash is a pastor with a bachelor's degree in religion (B.A. Religion) from Wayland Baptist University in Plainview, Texas, USA.
Pastor Nash is a servant leader, serving as senior pastor of Cornerstone Family Chapel. He is passionate about equipping church leaders for ministry. He believes the church of Christ is the only true agent of transformation; such transformation will be achieved by empowering ministry leaders through education for service (Eph. 4:12; 2 Tim. 2:2). He believes in teamwork for greater impact and achievement and invites those interested in this ministry to join them as co-laborers in God's Vineyard. Nash is also the principal director of Russell Academy.