Abraham, Isaac and Jacob knew about the covenant making God. God was going to reveal himself to Moses and the Israelites as the God who fulfiles the covenant. Abraham, Isaac and Jacob never knew God that way. Abraham, Isaac and Jacob knew the Lord, they had a real walk with him, but Moses and the Israelites were going to be privileged to know the Lord in a way that far surpassed what Abraham, Isaac and Jacob knew about the Lord. If Abraham, Isaac and Jacob had a way that they could know God, and if Moses and the Israelites had a far surpassing way that they could know God, what does that say about us? We have seen God revealed in even more glory and truth and precision in Jesus Christ. We can know him all the more. -David Guzik