So when the Lord saw that he turned aside to look, God called to him from the midst of the bush and said, “Moses, Moses!” And he said, “Here I am.” Then He said, “Do not draw near this place. Take your sandals off your feet, for the place where you stand is holy ground.” 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 3:4-6 NKJV
God is so amazing! The creator of the heavens and the Earth is personal enough to speak directly to Moses that He had heard His people. At the same time, He is so powerful and Holy. Moses is told to take off His shoes because it is holy ground. God did not choose to swarm the Egyptians with an army. He chose Moses (to which Moses basically responded, “Who me?”). God chose a single man and then displayed His mighty power.