Lots has happened since that first murder (in Gen 4:8), there has been God’s leading of a family and the building of nation of people who loved God. Genesis finished with 40 or so members of Jacob’s family in Egypt, by the time of Exodus it was hundreds of thousands and they were slaves…
Just suppose God wanted to rescue his people. Just suppose he chose a murderer who had run away from Egypt to be in charge. Just suppose he told this man his own name. Just suppose he did various miracles for this man and knew that often people don’t believe because of miracles… Exodus 4:8 says “Then the LORD said, “Suppose they do not believe you or pay attention to the first miracle. Then maybe they will believe the second one. ” – in verse 9 he goes on to suppose they might not believe that either. In Luke 16 Jesus tells a story where one of the characters says “If they won’t pay attention to Moses and the prophets, they won’t listen even to someone who comes back from the dead.” Jesus knew some people refuse to believe even when they see signs… (Luke 16:31)
But then just suppose this man, nervous and frightened to speak in public was able to lead all of God’s people out of Egypt and across the Red Sea.
Just suppose God wants to believe in you, to get to know you by name, to rescue you,
What could be achieved?
Why just suppose?