To urge us to follow our Lord.

When I pray to my guardian angel, I often ask him what he would do in my place. How would he accept suffering if he were with me? When I hold our cross and Your medal in my hand, I often pray to our guardian angels for both of us, to move us to follow our Lord just as they would if they lived on earth, and to urge us to fulfill everything our beloved Lord expects of us.

(Charles de Foucauld /1858–1916/, letter to a Trappist monk, November 29, 1896)