The New City Catechism Question # 9: What does God require in the 1st, 2nd, and 3rd commandments?

First, that we know and trust God as the only true and living God. Second, that we avoid all idolatry and do not worship God improperly. Third, that we treat God’s name with fear and reverence, honoring also his Word and works.
http://newcitycatechism.com/new-city-catechism/#9