דברי הימים א, פרק א׳, פסוק כ״ז

The biblical genealogies reach a profound turning point, concluding the long family line stretching from Shem to introduce the central figure of the nation. The primary approach among commentators is that the initial historical record uses the original name Abram simply to maintain the chronological order of Terah's sons. However, an immediate clarification follows, establishing that this is Abraham—the well-known and beloved figure whose identity was transformed by God. This change was meant to show His divine plan, marking Abraham's destiny and greatness as the appointed father of a multitude of nations [רד״ק, מצודת דוד, מלבי״ם].

The dual mention of his names serves two complementary purposes. Historically, because God changed his name, the original title would no longer appear in the biblical record, making it necessary to document this permanent transition [ביאור שטיינזלץ]. Additionally, there is a strict religious reason for the swift correction. Because referring to him by his old name actually violates a positive commandment, the narrative hurries to establish and emphasize his new identity [מלבי״ם].

From this pivotal moment onward, the focus shifts entirely to Abraham's descendants. While the children he had through Ishmael and Keturah are also recorded, establishing Abraham's place in the genealogy ultimately paves the way for the core narrative. The primary goal is to highlight the birth of Isaac, who stands as the true, central continuation of this chosen family line [רד״ק].