God takes action to resolve an injustice and chooses a person to make it happen. As with Abraham, Moses is not a likely choice. He has killed someone and decides it’s easier to run away from his problems than face them. Moses doesn’t want the responsibility either.
God identifies himself in verses 14 and 15. He calls Himself “I Am Who I Am.” This is the meaning of the proper name for God in Hebrew, which is “Yahweh.” Yahweh is translated as Lord in all capitals in our English Bibles. One of Jesus’ clearest statements that he is God is found in John 8:58 when he says, “I tell you the truth, before Abraham was even born, I Am!”
Throughout all that happens to the people in Egypt, God was aware of the injustice. His solution wasn’t thunderbolts and striking people dead, it was calling forth a leader. God pretty much always works through people, even significantly flawed ones. There might be a problem somewhere out there that God has chosen you to solve. You might feel inadequate, but Philippians 4:13 tells us, “For I can do everything through Christ, who gives me strength.”