(6) The frogs came up.—Hebrew, the frog. The term designates the species.

(7) The magicians did so.—It cannot be concluded from this that the magicians had the power of creating frogs. All that the writer means to express is, that they seemed to Pharaoh and to the Court to do on a small scale what Moses and Aaron had done on the largest possible scale. The means which they employed was probably sleight-of-hand. It has been well observed that they would have shown their own power and the power of their gods far more satisfactorily had they succeeded in taking the frogs away.

(8) Pharaoh called for Moses.—This was the first sign of yielding. Pharaoh had borne the infliction of the water turned to blood without flinching, probably because individually he had suffered but little from it. (See the comment on Exodus 7:23.) But he suffered from the frogs as much as any one else (Exodus 8:3-4); and the personal inconvenience drove him to make a concession. As far as words could go, the concession was complete. (1) He acknowledged the power of Jehovah (“Intreat the Lord, that He may take away, &c.”’); (2) he acknowledged the power of righteous men’s prayers; (3) he made an absolute unreserved promise to “let the people go.”

(9) And Moses said . . . Glory over me.—This phrase seems equivalent to—“I submit to thy will,” “I am content to do thy bidding. “It was probably an ordinary expression of courtesy in Egypt on the part of an inferior to a superior; but it was not a Hebrew idiom, and so does not occur elsewhere.
When shall I intreat?—Rather, as in the margin, against when? or for when?—i.e., what date shall I fix in my prayer to God as that at which the plague shall be removed? And so, in the next verse, for “to-morrow” translate against to-morrow. It seems strange that Pharaoh did not say, “To-day, this very instant; “but perhaps he thought even Jehovah could not do so great a thing at once.

(10) That thou mayest know.—Comp. Exodus 7:5; Exodus 7:17. Moses is not content that Pharaoh should simply acknowledge Jehovah as he had done (Exodus 8:8), but wishes him to be convinced that no other god can compare with Him.

(15) When Pharaoh saw that there was respite.—Hebrew, a breathing space.
He hardened his heart.—Hitherto Pharaoh’s nature had not been impressed; his heart had remained dull, callous, hard. Now an impression had been made (Exodus 8:8), and he must have yielded, if he had not called in his own will to efface it. Herein was his great guilt. (See the comment on Exodus 4:21.)

(18) The magicians did so—i.e., tried to do so—took moist earth, and dried it, and pulverised it, and tried the effect of their magic charms upon it, but. failed to produce mosquitoes, as Aaron had done. Mosquitoes were things too delicate to be caught, and manipulated, and produced at a given moment by sleight-of-hand. The magicians tried to produce a counterfeit of the miracle, but could not. Then they excused themselves to their master with the words, “This is the finger of a god.”

(19) The finger of God.—Rather, of a goal. The magicians meant to say, “This is beyond the power of man: it is supernatural; some god must be helping Moses and Aaron.” They did not mean to profess a belief in One God.
Pharaoh’s heart was hardened.—The mosquitoes did not impress Pharaoh as the frogs had done (Exodus 8:8-15). His heart remained hard. He had no need to harden it by an act of his will. Probably the visitation affected him but little, since he would possess mosquito curtains, and could inhabit the loftier parts of his palace, which would be above the height whereto the mosquito ascends (Herod, ii. 95).

(22) I will sever in that day the land of Goshen.—This was a new feature, and one calculated to make a deep impression both on king and people. The “land of Goshen” can only have been some portion of the Eastern Delta, a tract in unwise different from the rest of Egypt—low, flat, well-watered, fertile. Nature had put no severance between it and the regions where the Egyptians dwelt; so the severance to be made would be a manifest miracle.

(24) The land was corrupted.—Rather, as in the margin, destroyed. Kalisch observes, “These insects”—i.e., the kakerlaque (Blatta Orientalis), “really fill the land, and molest men and beasts; they consume all sorts of materials, devastate the country, and are in so far more detrimental than the gnats, as they destroy also the property of the Egyptians.”

(25) Pharaoh called for Moses.—Pharaoh suffered from the kakerlaque equally with his subjects, or rather, more than his subjects. It was “upon him,” inflicting its painful bites (Exodus 8:21); it was “upon his palaces” (Exodus 8:21), destroying his rich and magnificent furniture; it was upon his lands, ravaging and devastating them (Exodus 8:24). He therefore gave way before this plague almost at once, and without waiting for any remonstrance on the part of the magicians or others, “called for Moses.”
In the land.—Pretending to grant the request made of him, Pharaoh mars all by this little clause. A three days’ journey into the wilderness had been demanded from the first (Exodus 5:3), and no less could be accepted.

(26) It is not meet so to do.—Pressed to remain “in the land,” and sacrifice, Moses deemed it right to explain to the king why this was impossible. The Israelites would have to “sacrifice the abomination of the Egyptians”—i.e., animals of which the Egyptians abominated the killing; and if they did this in the presence of Egyptians, a riot would be certain to break out—perhaps a civil war would ensue. The animal worship of the Egyptians is a certain, and generally recognised, fact. It seemed to the Greeks and Romans the most striking characteristic of the Egyptian reliction. (See Herod, ii. 65-76; Diod. Sic. i. 82-84; Cic. De Nat. Deor. i. 36; &c.) The sacrificial animals of the Hebrews—sheep, goats, and cattle—were all of them sacred animals, either to the Egyptians generally, or to the inhabitants of certain districts. A Theban could not endure the sacrifice of a sheep, nor a Men-desian that of a goat (Herod. ii. 42). White cows and heifers—perhaps cows and heifers generally—were sacred to Isis-Athor. Any bull-calf might be an Apis; and it could not be known whether he was Apis or not till the priests had examined him (Herod. iii. 28). The extent to which the Egyptians carried their rage when a sacred animal was killed in their presence is illustrated by many facts in history. On one occasion a Roman ambassador, who had accidentally killed a cat, was torn to pieces by the populace (Diod. Sic. i. 83). On another, war broke out between the Oxyrinchites and the Cynopolites, because the latter had eaten one of the fish considered sacred by the former (Plutarch, De Isid. et Osir. § 44). The fear of Moses was thus not at all groundless.
Will they not stone us?—This is the first mention of “stoning” in Scripture or elsewhere. It was not a legalised Egyptian punishment; but probably it was everywhere one of the earliest, as it would be one of the simplest, modes of wreaking popular vengeance. Æschylus mentions it (Sept. 100 Th. 183), also Herodotus (v. 38). It was known in ancient Persia (Ctes. Fr. 50).

(27) As he shall command us.—Comp. Exodus 10:26—“We know not with what we must serve the Lord, until we come thither.”

(29) And Moses said, Behold . . . I will in-treat the Lord.—Moses accepted Pharaoh’s second promise, and took no special exception to its condition —“only ye shall not go very far away.” He had distinctly stated his own demand, which was for “a three days’ journey into the wilderness” (Exodus 5:3; Exodus 8:27). It was for Pharaoh to settle with himself whether he considered that distance “very far” or not. As he made no clear objection to the distance, Moses was bound to suppose that he allowed it.
Let not Pharaoh deal deceitfully any more. God’s servants must rebuke even kings when they openly break the moral law (1 Samuel 13:13; 1 Samuel 15:16-23; 2 Samuel 12:7-12; 1 Kings 21:20-22; Matthew 14:4. &c.). Pharaoh had promised unconditionally to let the people go if the frogs were removed (Exodus 8:8), and had. then flagrantly broken his word. Moses was right to rebuke his “deceit.”

(31) There remained not one.—The sudden and entire removal of a plague like this at the word of Moses was almost as great a miracle as its sudden coming at his word, and is therefore, when it happened, carefully recorded. (See Exodus 10:19.) It seems not to have happened with the frogs (Exodus 8:11-13) or with the mosquitoes.

(32) Pharaoh hardened his heart at this time also.—Comp, Exodus 8:15. Again, it is after being impressed, and partially relenting, that Pharaoh hardens his own heart.