Could you imagine going somewhere on vacation only to find yourself stuck there for the rest of your life? The vacation spot would turn into a prison. What if then the indigenous people who you once traveled to enjoy their culture begun to oppress you and your family, putting you to work for them, and replacing the once delicious culinary experience with bland food that serves only as sustenance for more work?
This is sort of what happens to Israel. They went to Egypt as a rescue from the famine. 400 years later their descendants still lived there as slaves. Who would come to rescue them? What about the promise God gave their ancestors of their own land in Canaan? In Exodus 1 & 2, we hear about a God who hears, sees, and knows. A God who has not given up on His people. A God of rescue.