The Lost Saint

From the publisher:

Marko’s life changes in an instant when he spies an armada of Ottoman ships on the horizon. After a battle separates him from his family, he finds help and guidance with a small group of monks. But when they stumble upon an abandoned church and a mysterious icon, Marko must conquer his own fears in order to make peace with God and to reunite with his family. Journey back to 1522, Rhodes, Greece, and experience with Marko what it means to be lost, then found.