Joseph Farah, best known as a newsman, has been studying the Bible for more than 40 years. During the writing and research of his most recent 2017 title, The Restitution of All Things: Israel, Christians, and the End of the Age, Farah began focusing on what Jesus called "the gospel of the kingdom." He observed that most definitions of the gospel revolve around personal salvation, rather than worldwide redemption, on which the prophets of both the Old Testament and the New focused. He wondered if this "gospel of the kingdom," which points to a future garden of Eden–style restoration of the world, could be the secret of finding the gospel in every book of the Old Testament. "It was the spiritual mystery of the gospel of the kingdom that allowed me to find the gospel all over the Hebrew Scriptures," the author says. "When I was doing media appearances for my previous book about the kingdom, The Restitution of All Things, people could hear the excitement in my voice. It was a message they hadn't heard often in church, Bible studies, or spiritual retreats and conferences. When they heard it, they got excited too."