Never leave your house without making the Sign of the Cross. It will be to you a staff, a weapon, an impregnable fortress. Neither man nor demon will dare to attack you, seeing you covered with such powerful armor. Let this sign teach you yourself that you are a soldier, ready to combat against the demons, and ready to fight for the crown of justice. Are you ignorant of what the Cross has done? It has vanquished death, destroyed sin, emptied Hell, dethroned Satan, and resurrected the universe; will you then doubt its power?
— St. John Chrysostom