18. And they shall hearken to thy voice. (44) The literal translation is, “They shall hearken to thy voice,” which many take to be a promise from God that they should be obedient; but the sense given in the Latin, “after they shall have heard thy voice,” seems more consonant, that first of all He should command them by the mouth of Moses, and that then they should accompany him in bearing the message to Pharaoh. For, before so difficult an undertaking was enjoined to them, it was desirable that the authority of God should be propounded to them, so that they might go about it with unwavering hearts. The sum of the message is, that they should seek permission from Pharaoh to go and sacrifice; but lest they might be thought to do so from mere unfounded impulse, they are desired to premise that God had met with them and had given them the command. For the word which expresses his meeting with them, means that he presented himself voluntarily. They had indeed cried out before, and often appealed to the faithfulness and mercy of God; yet still this was a voluntary meeting with them, when, contrary to the hope of them all, he avowed that he would be their deliverer, for, as we have already said, they cried out more from the urgency of their affliction than from confidence in prayer. A pretext is suggested to them, by which suspicion and anger may be turned away from themselves; for a free permission to depart altogether, by which grievous loss would have arisen to the tyrant, never would have been accorded. Besides, by refusing so equitable a demand, he despoiled himself of his royal right and power, since he thus withheld His due honour from the King of kings; for although the Israelites were under his dominion, yet did not his rule extend so far as to defraud God of his rightful worship. It was expedient, too, that the people should depart without the king’s permission only for very good reasons, lest hereafter license of rebellion should be given to other subjects. Pharaoh indeed suspected differently, that the sacrifice was a mere false pretense; but since this mistrust proceeded from his tyranny, his ingratitude was sufficiently proclaimed by it, because through his own evil conscience he forbade that God should be served. Whatever, again, might be his feelings, still the miracles by which the command was followed must needs have taught him that their mission proceeded from God. If the Israelites had merely spoken, and no confirmation of their words had been given, he might perhaps have naturally guarded himself against deception; but when God openly shewed that he was the originator of this departure, and that he commanded the sacrifice beyond the bounds of Egypt, all grounds of excuse are taken away; and thus the departure of the people is placed out of the reach of calumny. If any object that it is alien from the nature of God to countenance any craft or pretense, the reply is easy, — that he was bound by no necessity to lay open his whole counsel to the tyrant. They mistake who suppose that there is a kind of falsehood implied in these words; for God had no desire that his people should use any deceit, he only concealed from the tyrant (as He had a perfect right to do) what He was about ultimately to effect; and in this way He detected and brought to light his obstinacy. In a word, God entered the lists for the Israelites, not in an earthly controversy, but for religion, to which all the rights of kings must give way. But Jehovah calls himself the God of the Hebrews, that Pharaoh may know him to be the peculiar God of that nation, and that their form of worship was different from the customs of Egypt, and, in fact, that he is the only true God, and all others are fictitious.
(44) Lat. , “Et postquam audierint vocem;” after they shall have hearkened to thy voice.