In this timely and lucid study, Raymond Leo Cardinal Burke explains the Church’s perennial teaching on the worthy reception of Holy Communion and the pastoral application of Canon Law 915. Drawing on Scripture, the Fathers, the saints, and the modern Magisterium, he traces the consistent defense of the Eucharist’s sanctity from the earliest centuries to the present. Addressing questions of scandal, public sin, and pastoral responsibility, this volume clarifies when one should refrain from receiving and when Communion must be withheld. Rooted in charity and reverence, it presents the Church’s discipline not as exclusion, but as a safeguard for souls and for authentic unity in Christ.