This course aims to build up the saints in their understanding of two basic features of Reformed theology: 1) redemption accomplished by Christ for the church in his humiliation and exaltation, suffering and glory; and 2) how that redemption accomplished by Christ is applied by Christ’s Spirit, working through the Word, uniting the church to Christ by faith in effectual calling. Further elaboration is given to the benefits of that union in justification, sanctification, and adoption, all of which serve communion with Christ and the worship of the triune God. At every point, special attention is devoted to how the cross and resurrection of Christ shape and empower both union with Christ and the benefits of that union. Designed for the advanced Sunday school level, the course material is organized in terms of the teaching of the Westminster Shorter Catechism, questions 23 through 38.