This is a popular Catholic book that serves as a companion to the Mass. It explains the profound relationship between the celebration of the Eucharist (Holy Mass) and the crucifixion of Jesus at Calvary (Golgotha). Archbishop Fulton Sheen divides the Mass into seven main parts and connects each part with the Seven Last Words of Jesus on the cross. The goal is to help Catholics understand the Mass not merely as a ritual, but as a 'reenactment' of Christ's divine sacrifice, which gives deeper spiritual meaning to Mass participants.