Deuteronomy 4:9-14 -

The possession of the oracles of God by Israel was a benefit to them only as these were kept in mind and reverently obeyed. Therefore they were to take heed and diligently beware of forgetting the circumstances under which the Law had been received at Horeb. God had then commanded the people to be gathered together, so that they stood before the Lord, were in his manifested presence, and were made to hear his voice speaking to them from amidst the fire and the clouds that covered the mount. They had thus actual evidence and guarantee that the Law they had received was Divine; and this they were to keep in mind as long as they lived, and to communicate to their children in all coming time, that so they might fear the Lord; for on this rested that covenant which God had made with Israel, and which they were to keep as the condition of their continuing to enjoy privilege and life.