But the third picture I wish to point to in more detail: 'Passing over, He will deliver.' Now, the word that is there rendered 'passing over,' is almost a technical word in the Old Testament, because it is that employed in reference to the Passover. And so you see the swiftness of genius with which the prophet changes his whole scene. We had the nest and the mother-bird, we had the battlefield and the shield; now we are swept away back to that night when the Destroying Angel stalked through the land, and 'passed over' the doors on which the blood had been sprinkled. And thus this God, who in one aspect may be likened to the mother-bird hovering with her little breast full of tenderness, and made brave by maternal love conquering natural timidity, and in another aspect may be likened to the broad shield behind which a man stands safe, may also be likened to that Destroying Angel that went through Egypt, and smote wherever there were not the tokens of the blood on the lintels, and 'passed over' wherever there were. Of course, the original fulfilment of this third picture is the historical case of the army of Sennacherib; outside the walls, widespread desolation; inside the walls, an untroubled night of peace. That night in Egypt is paralleled, in the old Jewish hymn that is still sung at the Passover, with the other night when Sennacherib's men were slain; and the parallel is based on our text. So, then, here is another illustration of what I started with saying, that the past events of Scripture are transient expressions of perennial principles and tendencies. For the Passover night was not to be to the contemporaries of the prophet an event receding ever further into the dim distance, but it was a present event, and to be reproduced in that catastrophe when 'in the morning when they arose, they were all dead corpses.' And the event is being repeated to-day, and will be for each of us, if we will. So, then, there are these three pictures--the Nest and the Mother-bird, the Battlefield and the Shield, Egypt and the Destroying Angel. II. We note the reality meant by these pictures.