Does the Bible give the reasons (if any) for God choosing Abraham? Is there any reason given in the Bible as to why God chose Abram to be the father of Israel?

For example, Noah seems to be chosen by God because he is Righteous.


  "Noah was a righteous man, blameless in his generation." (Gen 6:9 ESV)


Is any reason given for God choosing Abram/Abraham to be the father of Israel?
Scripture gives this answer:


  Genesis 18:18-19 King James Version (KJV)
  
  18 Seeing that Abraham shall surely become a great and mighty nation,
  and all the nations of the earth shall be blessed in him?
  
  19 For I know him, that he will command his children and his household
  after him, and they shall keep the way of the Lord, to do justice and
  judgment; that the Lord may bring upon Abraham that which he hath
  spoken of him.


God, in His perfect Omniscience chose Abraham because He knew Abraham would fulfill His purpose.

More here.