What does it mean to live and build up the Kingdom of God? In this book, professor and priest Alberto de Mingo Kaminouchi introduces the contemporary reader to Christian ethics by examining the New Testament through the three key concepts of Aristotle's ethics: happiness, virtue, and love. In turn, the three affirmations orient this reflection through the Gospel. First, when the triune God appears on the horizon, it becomes easier to understand that existence has a purpose: namely, participating with the entire human family in this project of happiness called the Kingdom of God. Second, happiness is not something outside of us; it consists in the practice of the virtues that bring about a personal transformation. Third, the project of the Kingdom leads us to live in love with others. De Mingo Kaminouchi shows the reader a real model of this in the community we call the church, the "field hospital" for all those in need of hope. This book is accessibly written for readers not already well-versed in Christian ethics.