Moreover He said, “I am the God of your father—the God of Abraham, the God of Isaac, and the God of Jacob.” And Moses hid his face, for he was afraid to look upon God.
Exodus 3:6
God always speaks to you in the context of what He has done in the lives of those who have gone before you. When God encountered Moses, He did not give him an assignment independent of what He had done through those who had preceded him. God had made promises to Abraham, Isaac, and Jacob hundreds of years earlier, and He was now going to involve Moses in His ongoing activity to fulfill the covenant He had made with Moses’ forefathers.

