Genesis 18:19
(19) For I know him, that he will.--This translation has most of the Versions in its favour, and means that Abraham's good conduct earns for him the Divine condescension. But the Hebrew is, For I have known him in order that he may command his sons, &c. It gives God foreknowledge of the purpose for which He had called Abraham as the reason for thus revealing to him the method of the Divine justice. And this purpose was, that from Abraham should spring a nation whose institutions were to be fraught with Divine truth, whose prophets were to be the means of revealing God's will to man, and of whom, as concerning the flesh, the Messiah should come. What more fitting than that one appointed to fill so noble a calling should also be raised to the rank of a prophet, and be permitted to share in the Divine counsels? This rendering closely agrees with what is said in Genesis 18:18 about Abraham growing into a mighty nation; and it was the unique and high purpose for which this nation was to be called into being which brought Abraham into so close a relation to Jehovah.

Verse 19. - For I know him, that - literally, for I have known (or chosen, יָדַע being - dilexi, as in Amos 3:2) him to the end that (לְמַעַן conveying the idea of purpose; vide Ewald, § 357), the language expressing the idea that Abraham had been the object of Divine foreknowledge and election (Gesenius, Rosenmüller, Delitzsch, Keil, Oehler, Kalisch, Lange), although the reading of the text is substantially adopted by many (LXX., Vulgate, Targums, Luther, Calvin, Dathe, et alii). The latter interpretation assigns as the reason of the Divine communication the knowledge which Jehovah then possessed of Abraham's piety; the former grounds the Divine resolution on the prior fact that Divine grace had elected him to the high destiny described in the language following. It is generally agreed that this clause connects with Ver. 17; Bush regards it as exhibiting the means by which the future promised to Abraham in Ver. 18 should be realized - he will (rather, may) command his children and his household after him (by parental authority as well as by personal example), and they shall keep (rather, that they may keep) the way of the Lord, - i.e. the religion of Jehovah (cf. Judges 2:22; 2 Kings 21:22; Psalm 119:1; Acts 18:25), of which the practical outcome is - to do justice and judgment; - or righteousness and judgment, that which accords with right or the sense of oughtness in intelligent and moral beings, and that which harmonizes with the Divine law (cf. Ezekiel 18:5) - that (literally, to the end that, in order that, לְמַעַן, ut supra) the Lord may bring upon Abraham that which he hath spoken of him.

18:16-22 The two who are supposed to have been created angels went toward Sodom. The one who is called Jehovah throughout the chapter, continued with Abraham, and would not hide from him the thing he intended to do. Though God long forbears with sinners, from which they fancy that the Lord does not see, and does not regard; yet when the day of his wrath comes, he will look toward them. The Lord will give Abraham an opportunity to intercede with him, and shows him the reason of his conduct. Consider, as a very bright part of Abraham's character and example, that he not only prayed with his family, but he was very careful to teach and rule them well. Those who expect family blessings must make conscience of family duty. Abraham did not fill their heads with matters of doubtful dispute; but he taught them to be serious and devout in the worship of God, and to be honest in their dealings with all men. Of how few may such a character be given in our days! How little care is taken by masters of families to ground those under them in the principles of religion! Do we watch from sabbath to sabbath whether they go forward or backward?For I know him,.... Not only by his omniscience, but with a special knowledge, such as is accompanied with peculiar love and affection; and so Jarchi says, it is expressive of love. God loved Abraham, he was a peculiar favourite of his, and therefore he would reveal his secrets to him, see Amos 3:2; and he knew not only who he was, but what he was, a holy good man, made so by his own grace, and what he would do by the assistance of that grace, and particularly what follows:

that he will command his children, and his household after him; to serve and worship the Lord: not his own children only, but his servants also, all in his family; lay his injunctions on them, use his authority with them, give them all needful instructions, and take such methods with them as would tend to propagate and preserve the true religion after his death:

and they shall keep the way of the Lord; which he has prescribed to men, and directed them to walk in, even everything respecting instituted worship then revealed, and particularly:

to do justice and judgment; to attend to all the laws, statutes, and judgments of God; to do that which is just and right between man and man; not as a justifying righteousness, by which Abraham himself was not justified before God; but to show their regard to the will of God, in gratitude for favours received from him, and to glorify him, as well as for the good of their fellow creatures:

that the Lord may bring upon Abraham that which he hath spoken of him: not only on Abraham personally, but upon his posterity, they walking in the ways of the Lord, according to his command and direction: the word "that" here rather signifies, as Vatablus rightly observes, the consequence than the cause, what would follow upon these things, rather than as procured by them; these being the way in which God designed to bestow them, though not for them.

Genesis 18:18
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