God spoke to Moses and said, “So now go. I am sending you to Pharaoh to bring my people out of Egypt.” Exodus. 3:10 to which he replied, “Who am I that I should go to Pharaoh?” This was at the point when Moses’ self-esteem was at its lowest.
Did you notice that before God told Moses what He was going to do, He reminded Moses who He was? “I am the God of your father, the God of Abraham, the God of Isaac and the God of Jacob.”
God knew everything he had done, his weaknesses, but He wanted Moses to know it was through His mighty power that Moses was going to deliver His people.
Is God asking to do something that is too vast for you? It is not you but God who is going to accomplish it through you. Will you trust Him today?