Nancy Tillman is the author and illustrator of the New York Times best-selling picture book On the Night You Were Born and its companion journal, The Wonder of You: A Book for Celebrating Baby's First Year. Her other books include Wherever You Are: My Love Will Find You, The Spirit of Christmas, and Tumford the Terrible. A former advertising executive, Tillman now writes and illustrates full-time. She lives in Tualatin, Oregon.

Eric Metaxas is the author of EVERYTHING YOU ALWAYS WANTED TO KNOW ABOUT GOD (BUT WERE AFRAID TO ASK) and thirty children’s books. His writing has appeared in the New York Times, the Atlantic, Washington Post, and Christianity Today. He has written for VeggieTales and Rabbit Ears Productions, earning three Grammy nominations for Best Children’s Recording.