As it is written: "I have made you a father of many nations." He is our father in the sight of God, in whom he believed – the God who gives life to the dead and calls into being things that were not.
NIV
As it is written, I have made you the father of many nations. [He was appointed our father] in the sight of God in Whom he believed, Who gives life to the dead and speaks of the nonexistent things that [He has foretold and promised] as if they [already] existed. [Gen. 17:5.]AMP
(As it is written, I have made thee a father of many nations,) before him whom he believed, even God, who quickeneth the dead, and calleth those things which be not as though they were.
KJV