By the life of Pharaoh - חי פרעה chey Pharaoh, Pharaoh liveth. As if he had said, As surely as the king of Egypt lives, so surely shall ye not go hence unless your brother come hither. Here therefore is no oath; it is just what they themselves make it in their report to their father, Genesis 43:3 : the man did solemnly protest unto us; and our translators should not have put it in the form of an oath, especially as the original not only will bear another version, but is absolutely repugnant to this in our sense of the word.

Hereby ye shall be proved,.... Whether spies, or not, namely, by producing their youngest brother, said to be at home with his father:

by the life of Pharaoh ye shall not go forth hence, except your youngest brother come hither: the phrase, "by the life of Pharaoh", seems to be the form of an oath, as it was common with many nations, especially with the Scythians, who used to swear by the royal throne (a), and the Romans, in later times, by the life, health, and genius of their emperor; and this custom of swearing by the life of their king, or by his head, continued with the Egyptians, as Aben Ezra says, unto his times; though some take this to be a wish or prayer for the life of Pharaoh, and render it, "may Pharaoh live" (b), or, at most, but a strong asseveration, that as dear as the life of Pharaoh was to him, so surely they should not stir from the place where they were, unless their youngest brother Benjamin was brought thither.

(a) Herodot. Melpomene, sive, l. 4. c. 68. (b) "vivat Parhoh", Montanus, Junius & Tremellius; so Ainsworth and Lightfoot.

Hereby ye shall be proved: {d} By the life of Pharaoh ye shall not go forth hence, except your youngest brother come hither.

(d) The Egyptians who were idolaters, used to swear by their king's life: but God forbids swearing by anyone but him: yet Joseph dwelling among the wicked was corrupted by them.

15. By the life of Pharaoh-It is a very common practice in Western Asia to swear by the life of the king. Joseph spoke in the style of an Egyptian and perhaps did not think there was any evil in it. But we are taught to regard all such expressions in the light of an oath (Mt 5:34; Jas 5:12).

42:7-20 Joseph was hard upon his brethren, not from a spirit of revenge, but to bring them to repentance. Not seeing his brother Benjamin, he suspected that they had made away with him, and he gave them occasion to speak of their father and brother. God, in his providence, sometimes seems harsh with those he loves, and speaks roughly to those for whom yet he has great mercy in store. Joseph settled at last, that one of them should be left, and the rest go home and fetch Benjamin. It was a very encouraging word he said to them, I fear God; as if he had said, You may be assured I will do you no wrong; I dare not, for I know there is one higher than I. With those that fear God, we may expect fair dealing.