The book is a biblical and contemporary exploration of the fulfillment of God’s mission through Gentiles. Specifically, the four authors discuss at length the missional contributions and themes (especially in relation to migration and hospitality) of Abraham, Hagar, Jethro and Zipporah, four Philistine tribes, Ruth, Esther and Mordecai, the Magi, and Peter and Cornelius. In other words, this book sets forth the biblical narrative and current survey of the mission Dei from the inside out, which shows the inclusion of Gentiles as agents of God’s revelation, vehicles of God’s voice, and exemplars in fulfilling God’s mission in relation to the people of God.