Just one little thing. Literally speaking Abraham was never called a "Jew". He is called the father of many nations (Gen. 17:5). We are also told in Romans 4 that Abraham exercised his faith while yet uncircumcised. So technically he was a gentile when he believed in Jesus.
Yes, but he became a Jew (Hebrew) by becoming circumcised and that was the sign of the Jewish race, the miracle of the birth Isaac, from a dead phallus.
Fact remains that he was never called a Jew "literally". But eh was called the father of many nations and even today everyone who believes in Jesus is considered the offspring of Abraham. I guess that makes us all Jews by your definition.
The "dead phallus" line is intriguing. If Abraham had a "dead phallus" how was Ishmael conceived? I think you are confused about Sarah’s barrenness.