I came across the official teaching of Orthodox Judaism (the most strict/traditional form) that Judaism teaches that a person's "Jewishness" depends strictly on whether his mother was Jewish. This is called "matrilineal descent", which is opposed to "patrilineal descent" where the child's religion is determined by the father's religion. The only exception to this is if someone formally converts to Judaism, then it doesn't matter if his mother was Jewish. Most of us have grown up thinking that the Bible and ancient cultures passed down their lineage, religion, inheritance, etc, through the father. Thus, I was shocked and wanted to look into this more, especially to see if there was some theological error or problems with this claim.
The first thing that came to my mind was all the lineages listed in the Bible. In every case, it is one long list of fathers and sons. This strongly suggests that the son's tribal/ethnic and religion were passed down from the father. The next thing that came to my mind was the "Patriarch" language used throughout the Bible, especially Abraham, Issac, and Jacob. The language of "Abraham's seed" being the blessed seed/dna/semen would strongly suggest that the father is the ultimate (or at least preferred) determination of one's religion/ancestry/linage. This I just took as an accepted truth that everyone else was fine with, so I was shocked to see this so strongly opposed by the Orthodox Jews. This led me to delve into what "Biblical proof texts" they had going in their favor.
The wikipedia page on this issue (here) cites the main Biblical claims that I've seen on other sources, so I think it's easiest to just address the examples they cite.
The first thing that came to my mind was all the lineages listed in the Bible. In every case, it is one long list of fathers and sons. This strongly suggests that the son's tribal/ethnic and religion were passed down from the father. The next thing that came to my mind was the "Patriarch" language used throughout the Bible, especially Abraham, Issac, and Jacob. The language of "Abraham's seed" being the blessed seed/dna/semen would strongly suggest that the father is the ultimate (or at least preferred) determination of one's religion/ancestry/linage. This I just took as an accepted truth that everyone else was fine with, so I was shocked to see this so strongly opposed by the Orthodox Jews. This led me to delve into what "Biblical proof texts" they had going in their favor.
The wikipedia page on this issue (here) cites the main Biblical claims that I've seen on other sources, so I think it's easiest to just address the examples they cite.