Biblical theology for the most part is a Christian approach in which the theologian studies the Bible from the perspective of understanding the progressive history of God revealing Himself to humanity following the Fall and throughout the Old Testament and New Testament. It particularly focuses on the epochs of the Old Testament in order to understand how each part of it ultimately points forward to fulfillment in the life mission of Jesus Christ. Because scholars have tended to use the term in different ways, biblical theology has been notoriously difficult to define.