Gods Covenant with Abraham

Genesis 12:3  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.

Have you ever had a protector? Someone who watched over you and helped you? What if that person took it one step further, what if they helped those who helped you and hurt those who hurt you?  I had remembered verse 2 where the Lord promises to make "of thee a great nation". That's the one everyone remembers right? Abraham sons with Sarah are the fathers of the 12 tribes of Israel. I'm not sure how many people know that his Ishmael with Hagar, had twelve sons of his own, his second son Kedar is the ancestor of the prophet Mohammad. This means that Abraham is the father of both Israel and the Arabic people. 

What about verse 3 though? "I will bless them that bless thee, and curse him that curseth thee:" those that help Abraham and his family would gain blessing from the Lord and those that hurt or curse him would earn the wrath of the Lord. When I think of the story of Moses and the Pharaoh it is really amazing to think about what that really means. Finally that last part "and in thee shall all the families of the earth be blessed." Right now I only have my genealogy tentatively back to about the American Revolution and much of it needs to be fully verified, however I think that when all the work is done this is further verification that we will find we are all brothers and sisters and cousins and family.