The medium on which God's Law was written moved progressively further from God's ideal. God tried to write His Law on the hearts of His people at Sinai, but they refused, So God wrote His Law on stone tablets, but they were broken. Finally Moses wrote God's Law on parchment, and even this was largely ignored. God promises that someday He will succeed in writing His Law on the hearts of His people.

The process of writing God's Law on the hearts of his people has begun, but we cannot say it is complete until we understand it instinctively and we no longer need to teach each other about God. See Jeremiah 31:34.