Through the world of James of Jerusalem we discover the development of Christianity and its struggle for self-definition amidst Jewish roots and a rising congregation of newly converted Gentiles. In this time of early Christianity, James’ presence testified to the church’s diversity and he influenced Christianity beyond the literature of the New Testament. Patrick J. Hartin studies the character of James in his various life-roles: as a member of Jesus’ family, as a leader and spokesperson of Jerusalem, and as an important figure in early Christian writing, including that of Paul, and the Acts of the Apostles. The use of historical critical method illustrates for students the growth of traditions and the sources behind the texts.