Ashes to Ashes: Christians Mark Start of Lent

The Rev. Gordon Reid with Saint Clement's Episcopal Church, accompanied by Daniel Craig, places ash on a worshiper's forehead on Ash Wednesday at the corner of Chestnut and 19th Streets in Philadelphia on March 5, 2014. Matt Rourke / AP

Ash Wednesday marks the beginning of the Lenten season, a time when Christians commit to acts of penitence and prayer in preparation for Easter Sunday.

A woman receives ashes from a priest during an Ash Wednesday Mass in Baltimore, on March 5, 2014. Patrick Semansky / AP

Image: A woman prays at St. Patrick's Cathedral
A woman prays at St. Patrick's Cathedral, on March 5, 2014 in New York. Mark Lennihan / AP