Genesis chapters 1 and 2 - Interpreting the seven-day creation account.The Sabbath day - Origins and symbolism of the Sabbath, debates around Sabbath keeping and enforcement.Dispensationalism - The seven ages/dispensations, and how they relate to the days of creation.God's nature - Whether God gets tired, God's emotions, God's decision to rest.Challenges to the 7-day week - Attempts historically to change the weekly calendar by groups opposed to the Bible/Christianity.Legalism and rules - Dangers of legalism and extra-biblical rules, hypocrisy around things like Sabbath keeping.Young Earth creationism - Scientific arguments for a young earth, evolution debates.The spiritual and physical realms - Relationships between the physical and spiritual, e.g. stars and angels.