When a believer is immersed in the rosary, the familiar phrases of the Lord's Prayer, the Hail Mary and the Doxology find a soft rhythm, as clicking beads mix with steady breaths and the human heart. 

While meditating on each great mystery of the faith, the final words of the Hail Mary prayers are particularly sobering: "Holy Mary Mother of God, pray for us sinners now and at the hour of our death. Amen." 

The prayers are "like a pulse that sinks deep inside and goes on and on as you meditate on how these mysteries are connected to your life," said writer Elizabeth Scalia, known as "The Anchoress" among Catholic bloggers. 

"I think all the mysteries would have offered inspiration and consolation to James Foley" while in captivity, she said, as he "faced the fact that his life was truly in danger."