The United States Conference of Catholic Bishops ( USCCB ) explain the Catechism in their book entitled United States Catechism for Adults , published in 2006 . Regarding graven images , they expound that this command address idolatry that in ancient times expressed itself in the worship of such things as the " sun , moon , stars , trees , bulls , eagles , and serpents " as well as " emperors and kings " . They explain that today , idolatry express itself in the worship of other things , and list some as " power , money , materialism and sports . "