 The first commandment , according to Church teaching , " means that [ followers ] must worship and <unk> God alone because God is alone . " The Catechism explains that this prohibits idolatry , providing examples of forbidden practices such as the worship of any creature , and of " ' demons ... power , pleasure , race , ancestors , the state [ and ] money ' " . Augustine interpreted this commandment as " Love God and then do what you will " . Explaining this sentiment , Kreeft states that all sin " serves some other god , <unk> another commander : the world or the flesh or the devil " , if God truly be loved then one will do what God wills . 
