Dr. Frank graduated from Gordon College and Gordon Divinity School in Boston and Wenham, Massachusetts, and served as pastor at First United Presbyterian Church in Lawrence, Massachusetts, Mt. Lebanon United Presbyterian Church, Mt. Lebanon, Pennsylvania, and South Hills Reformed Presbyterian Church, Upper St. Clair, Pennsylvania. He earned his doctorate from Westminster Theological Seminary, Escondido, California, in 2003. As part of his doctorate project, he authored the book, The Fear of God: A Forgotten Doctrine.

Arnold was a humble man who loved and trusted in Christ, his Savior and Lord, and practiced what he preached. Many were called into Christ's Kingdom and encouraged in their walks with Christ through the gifts God gave him to preach and teach. His life was a witness to the truths of God's Word, and he looked forward to the day when he would see Christ fully and sing His praises.