Are you aware that verse is talking about Abraham and NOT THE nation of Israel?
Genesis 12
12 Now the Lord had said unto Abram, Get thee out of thy country, and from thy kindred, and from thy father's house, unto a land that I will shew thee:
[SUP]2 [/SUP]And I will make of thee a great nation, and I will bless thee, and make thy name great; and thou shalt be a blessing:
[SUP]3 [/SUP]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.
God is speaking to Abram,God tells Abram to LEAVE HIS COUNTRY,then God tells Abram that Gos would make him a great nation,bless him and make him a great nation,and God would bless those that bless Abram. You are adding something to the text that IS NOT THERE. ISRAEL was not told to get out of their country,from their kindred and from their fathers house. That passage is spoken to ABRAM NOT ISRAEL.