דברי הימים א, פרק א׳, פסוק ל״ד

The lineage of the early generations narrows its focus to the chosen family line, tracing the descent from Abraham to Isaac, and eventually to the fathers of the nation. The historical record repeats the event of Abraham fathering Isaac, even though Isaac and his family appear earlier in the account. This repetition serves to highlight that Isaac is the primary descendant and the true successor to Abraham [מלבי״ם]. Taking a deeper approach, this second mention of Isaac's birth points to a profound spiritual transformation he experienced during his binding on the altar. Through Abraham's merit, Isaac received a new soul. He is therefore viewed as having been born anew, undergoing a spiritual renewal that ultimately enabled him to establish his own family [חומת אנך].

The account then lists Isaac's sons, Esau and Israel. The name Israel refers to Jacob, though he only received this name later in his life rather than at birth [ביאור שטיינזלץ]. The specific choice to use the name Israel instead of Jacob is meant to pay respect to King David [רש״י].

This connection between the name Israel and the honor of King David is understood in a few different ways [חומת אנך]. First, through his songs and praises to God, King David spiritually repaired the injury to Jacob's hip, an injury that occurred during the very same event where Jacob was renamed Israel. Second, at the time he was named Israel, Jacob received a promise that kings would descend from him. This prophecy came true through the reigns of King Saul and Ish-bosheth. Highlighting the name Israel shows that the delay in David becoming king over all the tribes was simply because this earlier prophecy had to be fulfilled, not because David had sinned or been rejected. Finally, the name Israel serves to defend David's ancestry. Just as Jacob was given the name Israel and remained completely pure despite marrying two sisters, David's descent from Ruth the Moabite is part of a perfect, sinless divine plan.