The question of what it means for Christ to be the "image of God," or imago dei, lies at the heart of the Christological debates of the fourth century. Is an image a derivation from its source? Are they two separate substances? Does an image serve to reveal its source? Is an image ontologically inferior to its source? In this book, Gerald P. Boersma examines three Western pro-Nicene theologies of the imago dei, which tackle the question of whether human beings and Christ can both be considered to be the "image of God."

Boersma goes on to examine Augustine's early theology of the imago dei, prior to his ordination (386-391). According to Boersma, Augustine's early thought posits that Christ is an image of equal likeness to God, while a human being is an image of unequal likeness. He argues that although Augustine's early theology of image builds on that of Hilary of Poitiers, Marius Victorinus, and Ambrose of Milan, Augustine was able to affirm, in ways that his predecessors were not, how both Christ and the human person can be considered the imago dei.