“This book, The Purpose of Christmas, is the most clear definition of Christianity – of what it means to follow Jesus, what it means to be saved – of anything I’ve ever written,” Warren says.

Using Christmas, the book explains why Jesus Christ came to earth – which Warren says can be summed up through the three statements given by the angels that appeared at the first Christmas.

“First, he (the angel) said ‘I bring you good news of great joy.’ It’s a time for celebration,” explains Warren. “And then he says, ‘for on this day is born to you a savior, who is Christ the Lord.’ It’s a time for salvation. And then he says ‘Peace on earth; goodwill toward men.’ It’s a time for reconciliation."