Genesis 12:2

Here is added an encouraging promise, nay a complication of promises, I will make of thee a great nation — When God took him from his own people, he promised to make him the head of another people. This promise was. A great relief to Abram's burden, for he had now no child. A great trial to Abram's faith, for his wife had been long barren, so that if he believe, it must be against hope, and his faith must build purely upon that power which can out of stones raise up children unto Abraham. I will bless thee — Either particularly with the blessing of fruitfulness, as he had blessed Adam and Noah; or in general, I will bless thee with all manner of blessings, both of the upper and nether springs: leave thy father's house, and I will give thee a father's blessing, better than that of thy progenitors. I will make thy name great — By deserting his country he lost his name there: care not for that, (saith God) but trust me, and I will make thee a greater name than ever thou couldst have had there. Thou shalt be a blessing — That is, thy life shall be a blessing to the places where thou shalt sojourn. I will bless them that bless thee, and curse him that curseth thee — This made it a kind of league offensive and defensive between God and Abram. Abram heartily espoused God's cause, and here God promiseth to interest himself in his. In thee shall all the families of the earth be blessed — This was the promise that crowned all the rest, for it points at the Messiah, in whom all the promises are yea and amen.