EXPOSITION
Before proceeding to relate the last and greatest of the plagues, the author allows himself a momentary pause while he casts his eye back on the whole series of miracles hitherto wrought in Egypt, on the circumstances under which they had been wrought, their failure to move the stubborn will of Pharaoh, and the cause of that failure, the hardening of his heart, which hardening the author once more ascribes to Jehovah. With this summary he terminates the second great division of his work, that which began with Exodus 2:1-25; and which traces the history of Moses from his birth to the close of his direct dealings with Pharaoh.