In thee - In thy posterity, in the Messiah, who shall spring from thee, shall all families of the earth be blessed; for as he shall take on him human nature from the posterity of Abraham, he shall taste death for every man, his Gospel shall be preached throughout the world, and innumerable blessings be derived on all mankind through his death and intercession.

And I will bless them that bless thee,.... Not the priests only that should bless his children, the children of Israel, as the Targum of Jonathan, but all men of all nations, and of every age, that speak well of him, commend him for his faith and holiness, and tread in his steps, these are blessed with faithful Abraham, Galatians 3:7.

And curse him that curseth thee; here is a change of numbers, before the plural, here the singular, denoting, it may be, that many would bless him, and but few curse him, and that every individual person that did curse him should be cursed himself: the Targum of Jonathan wrongly restrains this to Balaam's cursing Abraham's children, and was cursed by God; Maimonides (y) thinks, there is no doubt to be made of it, that the Zabaeans, the idolatrous people Abram was brought up with, when he contradicted them, loaded him with curses and reproaches; and, because he bore them all patiently for the glory of God, as became him, therefore these words are said; but they, without question, respect future as well as present times, and regard all such, in every age and of every nation, that disapproves of, or rejects and reproaches Abram's God, his faith, his religion, and his people.

And in thee shall all families of the earth be blessed; that is, in his seed, as in Genesis 22:18 and which is interpreted of Christ, Acts 3:25 meaning not every individual of all the families or nations of the earth; but that as many as believe in Christ, of all nations, are blessed in him; and that whoever of them are blessed, they are blessed and only blessed in him, and that they are blessed for his sake with all spiritual blessings; see Ephesians 1:3 such as redemption, justification, remission of sins, sanctification, adoption, and eternal life.

(y) More Nevochim, ut supra. (par. 3. c. 29. p. 421.)

And I will bless them that bless thee, and curse him that curseth thee: and in thee shall all families of the earth be blessed.

12:1-3 God made choice of Abram, and singled him out from among his fellow-idolaters, that he might reserve a people for himself, among whom his true worship might be maintained till the coming of Christ. From henceforward Abram and his seed are almost the only subject of the history in the Bible. Abram was tried whether he loved God better than all, and whether he could willingly leave all to go with God. His kindred and his father's house were a constant temptation to him, he could not continue among them without danger of being infected by them. Those who leave their sins, and turn to God, will be unspeakable gainers by the change. The command God gave to Abram, is much the same with the gospel call, for natural affection must give way to Divine grace. Sin, and all the occasions of it, must be forsaken; particularly bad company. Here are many great and precious promises. All God's precepts are attended with promises to the obedient. 1. I will make of thee a great nation. When God took Abram from his own people, he promised to make him the head of another people. 2. I will bless thee. Obedient believers shall be sure to inherit the blessing. 3. I will make thy name great. The name of obedient believers shall certainly be made great. 4. Thou shalt be a blessing. Good men are the blessings of their country. 5. I will bless them that bless thee, and curse him that curseth thee. God will take care that none are losers, by any service done for his people. 6. In thee shall all the families of the earth be blessed. Jesus Christ is the great blessing of the world, the greatest that ever the world possessed. All the true blessedness the world is now, or ever shall be possessed of, is owing to Abram and his posterity. Through them we have a Bible, a Saviour, and a gospel. They are the stock on which the Christian church is grafted.