Then to look at the brown scapular in particular, learn of the Carmelite Order and St. Simon Stock. (There is also the parallel development in the Eastern Orthodox Churches with the ikon of the Theotokos holding her mantle of protection.) The advances of the Saracens in particular gave Christians everywhere the fear that Islam would bring an end to Christianity and the independence of Christian nations. The brown scapular held with it the promise that the blessed Mother of Jesus would not forget her Carmelite children who were genuinely her children because they were one with her Son through Holy Baptism and the sacramental life. To learn more about St. Simon Stock and the Brown Scapular click here.
Hebrews 12:14 -- Strive for peace with all men, and for the holiness without which no one will see the Lord. (RSV)