God did infact choose the nation of Israel to enter into a covenant with them, He specifically declares Himself "their God" but that through them all families in the world would be blessed.
Genesis 18 17 The Lord said, “Shall I hide from Abraham what I am about to do,
18 since Abraham will surely become a great and mighty nation, and in him all the nations of the earth will be blessed?
"But you, Israel, My servant, Jacob whom I have chosen, Descendant of Abraham My friend, You whom I have taken from the ends of the earth, And called from its remotest parts And said to you, 'You are My servant, I have chosen you and not rejected you." (Isaiah 41:9)