This is a lesson about the Real Presence of Jesus Christ in the Eucharist, also known as Holy Communion. It details the understanding of transubstantiation, the process by which the bread and wine become the body and blood of Christ, and emphasizes the importance of Eucharistic adoration, both during Mass and outside of it. The lesson also explores the proper preparation for receiving Holy Communion, emphasizing the need for a state of grace, and outlines the benefits of receiving the sacrament.