George Barna has filled executive roles in politics, marketing, advertising, media development, research and ministry. He founded the Barna Research Group in 1984 (now The Barna Group) and...

Eric Metaxas is the #1 New York Times Bestselling author of Bonhoeffer, and many other books, including Is Atheism Dead?, Martin Luther, Amazing Grace, and Letter to the...

Os Guinness is an author and social critic. Great-great-great grandson of Arthur Guinness, the Dublin brewer, he was born in China in World War Two where his parents...

Dr. R. Albert Mohler Jr. serves as president of The Southern Baptist Theological Seminary – the flagship school of the Southern Baptist Convention and one of the largest...