Gen 12:1-3 Now the LORD said to Abram, “Go from your country and your kindred and your father’s house to the land that I will show you. (2) And I will make of you a great nation, and I will bless you and make your name great, so that you will be a blessing. (3) I will bless those who bless you, and him who dishonors you I will curse, and in you all the families of the earth shall be blessed.”
Gen 24:1 Now Abraham was old, well advanced in years. And the LORD had blessed Abraham in all things.
“Why does Abraham leave Mesopotamia? God’s words in this passage give us some insight into what is at stake. To be sure, God offers Abraham some things that any man might want, whether he is good or evil – to attain fame in history, to be the father of a great nation. But in addition to these, God speaks to Abraham about two moral dimensions that are to attend this project of exchanging the great metropolis for life in a shepherd’s tent in Canaan: Abraham is told that he will be blessed; and he is told that he will be a blessing to all the families of the earth. And in fact, the biblical History is insistent upon both of these dimensions, returning repeatedly to the suggestion that in the subsequent history of Abraham’s children “all the nations of the earth will be blessed”; and telling us explicitly, at the end of Abraham’s life, that “the Lord had blessed Abraham in all things.”
The Biblical idea of blessedness (happiness) is not altruism or a lack of interest in oneself. Nor is it a prosperity gospel way of thinking which says that as long as I am prospering I should be happy. But it is, as shown in Abraham’s life in Genesis, seeking and bestowing happiness. Or like Abel, “making good of it (Genesis 4:7)” for yourself, but also for others.
 Yoram Hazony, The Philosophy of Hebrew Scripture: An Introduction (New York: Cambridge University Press, 2012), 111.