ראובן was the בכור from both parents. Even though he was a perfectly healthy baby no Bris will be done on him because
of מתו אחיו מחמת מילה. His two younger brothers died when they had their Bris.
How is this possible?
ופעמוני זהב בתוכם סביב אונקלוס פ ' תצוה , רש " י and the רמב " ם translate, " בתוכם " ” in betwe...