For more information about seeing, savoring, and celebrating Christ in the Old Testament, see Jason's book How to Understand and Apply the Old Testament. Also see 40 Questions about Biblical Theology, a book Jason wrote with Andrew Naselli and Oren Martin. For overviews covering each of the sections in the Old Testament, see Hands to the Plow's Developing Leaders curriculum. Here are links to the Introduction, Law, Prophets, and Writings.
