And since the fear of disadvantage in war had prompted the murder of the Hebrew children, it was right that the retributive blow should destroy first their children and then their men of war.
When we come to examine the plagues in detail, we discover that it is no arbitrary fancy which divides them into three triplets, leading up to the appalling tenth. Thus the first, fourth, and seventh, each of which begins a triplet, are introduced by a command to Moses to warn Pharaoh "in the morning" (vii. 15), or "early in the morning" (viii. 20, ix. 13). The third, sixth and ninth, on the contrary, are inflicted without any warning whatever. The story of the third plague closes with the defeat of the magicians, the sixth with their inability to stand before the king, and the ninth with the final rupture, when Moses declares, "Thou shalt see my face no more" (viii. 19, ix. 11, x. 29).
The first three are plagues of loathsomeness--blood-stained waters, frogs and lice; the next three bring actual pain and loss with them--stinging flies, murrain which afflicts the beasts, and boils upon all the Egyptians; and the third triplet are "nature-plagues"--hail, locusts and darkness. It is only after the first three plagues that the immunity of Israel is mentioned; and after the next three, when the hail is threatened, instructions are first given by which those Egyptians who fear Jehovah may also obtain protection. Thus, in orderly and solemn procession, marched the avengers of God upon the guilty land.
It has been observed, concerning the miracles of Jesus, that not one of them was creative, and that, whenever it was possible, He wrought by the use of material naturally provided. The waterpots should be filled; the five barley-loaves should be sought out; the nets should be let down for a draught; and the blind man should have his eyes anointed, and go wash in the Pool of Siloam.
And it is easily seen that such miracles were a more natural expression of His errand, which was to repair and purify the existing system of things, and to remove our moral disease and dearth, than any exercise of creative power would have been, however it might have dazzled the spectators.
Now, the same remark applies to the miracles of Moses, to the coming of God in judgment, as to His revelation of Himself in grace; and therefore we need not be surprised to hear that natural phenomena are not unknown which offer a sort of dim hint or foreshadowing of the terrible ten plagues. Either cryptogamic vegetation or the earth borne down from upper Africa is still seen to redden the river, usually dark, but not so as to destroy the fish. Frogs and vermin and stinging insects are the pest of modern travellers. Cattle plagues make ravage there, and hideous diseases of the skin are still as common as when the Lord promised to reward the obedience of Israel to sanitary law by putting upon them none of "the evil diseases of Egypt" which they knew (Deut. vii. 15).[11] The locust is still dreaded. But some of the other visitations were more direful because not only their intensity but even their existence was almost unprecedented: hail in Egypt was only not quite unknown; and such veiling of the sun as occurs for a few minutes during the storms of sand in the desert ought scarcely to be quoted as even a suggestion of the prolonged horror of the ninth plague.
Now, this accords exactly with the moral effect which was to be produced. The rescued people were not to think of God as one who strikes down into nature from outside, with strange and unwonted powers, superseding utterly its familiar forces. They were to think of Him as the Author of all; and of the common troubles of mortality as being indeed the effects of sin, yet ever controlled and governed by Him, let loose at His will, and capable of mounting to unimagined heights if His restraints be removed from them. By the east wind He brought the locusts, and removed them by the south-west wind. By a storm He divided the sea. The common things of life are in His hands, often for tremendous results. And this is one of the chief lessons of the narrative for us. Let the mind range over the list of the nine which stop short of absolute destruction, and reflect upon the vital importance of immunities for which we are scarcely grateful.