How true! With the Rosary, we can fight the powers of Satan, which foster sin, hatred, and war. The Rosary is the weapon of the Church in proclaiming unity and peace. All mankind is called to be part of the One, Universal Faith, and we are called to pray together. The Rosary has been called the second greatest prayer, second only to the Holy Mass. “The Rosary is the scourge of the devil,” wrote Pope Adrian V.