What is a father?
Genesis presents Abraham as being the father of many nations.
The whole Bible presents the Israelites as the ‘sons of Abraham’ on multiple occasions.
The New Testament, in particular, presents anybody with appropriate faith in God (whatever that means…but usually faith in Christ) as a child of Abraham.
See: Proverbs 1:8,10,15; 2:1; 3:1,11,21; 4:10,20; 5:1,20; 6:1,3,20; 7:1; 19:27; 23:15,19,26; 24:13,21; 27:11; 31:2.
Why does this matter? Abraham’s story in the Bible could be read as a representation of the ideal life of goodness in a post-catastrophic world. Or in question and answer format:
Q: In a world where evil, disaster, and death are a given, what does it mean to seek the good God has for us in the world?
A: Look at Abraham.
The New Testament does not shy away from this answer, despite having Jesus as an example. Jesus, in John 8 points to the works of Abraham. Paul in Romans 4 and Galatians 3-4 points to the faith of Abraham. Hebrews is largely about Abraham’s patient faith in God. And James 2 points directly at the good works of Abraham as exemplary even for those after the resurrection of Christ.
Below are my reflections on some of the passages that indicate that Genesis means for us to see Abraham as an example of the good life:
Now the LORD said to Abram, “Go from your country and your kindred and your father’s house to the land that I will show you. (2) And I will make of you a great nation, and I will bless you and make your name great, so that you will be a blessing. (3) I will bless those who bless you, and him who dishonors you I will curse, and in you all the families of the earth shall be blessed.”
In the passage above, we see that there is an implied condition. Abraham must go to be made into a great nation. That Genesis presents the promise as fulfilled shows that we’re meant to see Abraham as a man who kept a covenant with God. Incidentally, he also took the offer out of self-interest. I’ve written about this before.
When Abram was ninety-nine years old the LORD appeared to Abram and said to him, “I am God Almighty; walk before me, and be blameless, (2) that I may make my covenant between me and you, and may multiply you greatly.” (3) Then Abram fell on his face. And God said to him, (4) “Behold, my covenant is with you, and you shall be the father of a multitude of nations. (5) No longer shall your name be called Abram, but your name shall be Abraham, for I have made you the father of a multitude of nations. (6) I will make you exceedingly fruitful, and I will make you into nations, and kings shall come from you. (7) And I will establish my covenant between me and you and your offspring after you throughout their generations for an everlasting covenant, to be God to you and to your offspring after you. (8) And I will give to you and to your offspring after you the land of your sojournings, all the land of Canaan, for an everlasting possession, and I will be their God.”
Here, God’s covenant is made more explicit. It’s called a covenant and in it Abraham is promised to be a father of nations. But what is the condition, “walk before me and be blameless.” The reader is to understand that Abraham actually did do this. God promises to make Abraham very fruitful here, which hearkens back to Noah and Adam as the first man and the second first man. While I don’t quote it, the covenant above includes circumcision, which appears to be a civilizational curtailing of sexual obsession. “You’ll be fruitful but there is a limit to that.” I suspect that circumcision goes back to Genesis 2:22-24 to indicate that sexuality is a blessing and a limitation. Abraham is to be the father of many but that understanding is that his sexuality and those of his children be limited by the wound and healing power of marriage.
Now Abraham was old, well advanced in years. And the LORD had blessed Abraham in all things.
And this passage shows that by the end of it all, Abraham had been blessed by God in all things. He kept the covenant as best a man can in the circumstances (fallen nature, a barbaric world, and a pagan worldview). And so the indication is that if a reader/listener to Genesis wants to experience the blessing offered to humanity in Genesis 1:26-31, being like Abraham is a stable method of doing so.
This is the affirmation of the Old and New Testaments, of prophets, apostles, and Jesus.
 Obviously, fathers can also be wrong which is why the Bible commends listening more than tradition, like Scripture and reason to know the truth.