The gospel and grace are simple concepts. Communicating them clearly is not. Especially in a culture where concepts like "sin" and "holiness" and even "truth" are negotiable and redefining God to fit our desires is almost fashionable.
People around the world have used an effective solution: teaching chronologically through the Bible.
Firm Foundations: Creation to Christ unfolds the story of God. Moving through key Bible passages, these lessons progressively reveal truth about God and man, and the gospel and grace that bridge the gap of sin.