Jesus Christ's human knowledge in His incarnate state has always constituted an object of a lively theological discussion. In a desire to bring new insights into the old arguments and to offer fresh arguments in the area of His self-consciousness, a number of recent theological studies have contributed to serious but quiet shifts and developments in the understanding of Jesus' full life in his human nature. A close examination of these theological trends reveals a deliberate shift in the meanings of the terms while a general presumption of the stability of these meanings remains in the general theological community. This work offers clarifications to the meanings of several of these confusing terms. Using insights from Pneumatology, Mariology, and current scientific research to understand Jesus' humanity and the nature of his self-consciousness, it exposes the weaknesses in current approaches to the theme but also offers a way to harmonize and unify the conflicting views. As a help generally, this work shows the fruitful practical relationship between theology and science and the relevance of the theme for several important ethical and moral questions of the day. It takes the theological reflections of the ancient and medieval periods into serious consideration, notes the points of transition into modern categories and brings in the invaluable reflections of a cross-section of contemporary theologians to give a clear picture of the theme.