When asked about the greatest command, Jesus didn't hesitate: "Love God with everything." The source of this teaching was the famous catechesis of ancient Israel, often called the Shema (Deuteronomy 6:4-5). The Shema joins a theological statement with a command. It confesses the uniqueness of God and calls for loving him. God is the single greatest reality. Love is our single greatest responsibility. Such faith is formed best in community.