Much of Yaakov Ariels research has focused on Protestantism, especially Evangelical Christianity, and its attitudes towards the Jewish people and the Holy Land; on Christian-Jewish relations in the late modern era; and on the Jewish reaction to modernity and postmodernity. He has published numerous articles and three books on these subjects. One of these books, Evangelizing the Chosen People, was awarded the Albert C. Outler prize by the American Society of Church History. His latest book, An Unusual Relationship: Evangelical Christians and Jews, was published in 2013 by New York University Press. His current project looks at the religious aspects in the life and career of poet Allen Ginsberg who was, in significant ways, a pioneer and prophet to many of his generation.