12:29-36 The Egyptians had been for three days and nights kept in anxiety and horror by the darkness; now their rest is broken by a far more terrible calamity. The plague struck their first-born, the joy and hope of their families. They had slain the Hebrews' children, now God slew theirs. It reached from the throne to the dungeon: prince and peasant stand upon the same level before God's judgments. The destroying angel entered every dwelling unmarked with blood, as the messenger of woe. He did his dreadful errand, leaving not a house in which there was not one dead. Imagine then the cry that rang through the land of Egypt, the long, loud shriek of agony that burst from every dwelling. It will be thus in that dreadful hour when the Son of man shall visit sinners with the last judgment. God's sons, his first-born, were now released. Men had better come to God's terms at first, for he will never come to theirs. Now Pharaoh's pride is abased, and he yields. God's word will stand; we get nothing by disputing, or delaying to submit. In this terror the Egyptians would purchase the favour and the speedy departure of Israel. Thus the Lord took care that their hard-earned wages should be paid, and the people provided for their journey.

31. called for Moses and Aaron—a striking fulfilment of the words of Moses (Ex 11:8), and showing that they were spoken under divine suggestion.