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.

29. at midnight the Lord smote all the first-born in the land of Egypt—At the moment when the Israelites were observing the newly instituted feast in the singular manner described, the threatened calamity overtook the Egyptians. It is more easy to imagine than describe the confusion and terror of that people suddenly roused from sleep and enveloped in darkness—none could assist their neighbors when the groans of the dying and the wild shrieks of mourners were heard everywhere around. The hope of every family was destroyed at a stroke. This judgment, terrible though it was, evinced the equity of divine retribution. For eighty years the Egyptians had caused the male children of the Israelites to be cast into the river [Ex 1:16], and now all their own first-born fell under the stroke of the destroying angel. They were made, in the justice of God, to feel something of what they had made His people feel. Many a time have the hands of sinners made the snares in which they have themselves been entangled, and fallen into the pit which they have dug for the righteous [Pr 28:10]. "Verily there is a God that judgeth in the earth" [Ps 58:11].