Why could Israel do nothing to redeem themselves from Egypt?
Israel could do nothing to redeem themselves from Egypt because they had no armed forces, no economic or political clout, and were merely slaves and servants—helpless. The Exodus was a redemption in which God Himself did the redeeming; they possessed no means to deliver themselves.
Les explains that the Exodus is the whole process of redemption whereby God is going to do the redeeming. Israel is in a position where she can do nothing: she has no armed forces, no economic clout, no political clout. They are just slaves, servants, and helpless. Redemption therefore requires a person, as with Moses, who was proven as the legitimate deliverer by sign miracles, and it also requires the blood of a lamb.