- Like his father Abraham (Gen 12:1-3), Isaac is given the promise and the blessing unconditionally (vv. 5, 11).
- Keturah and her children demonstrate the Abrahamic promises in two ways (distinction from the main line of promise of Isaac and yet receive collateral blessing*).
- Isaac is linked to the burial cave in Machpelah (vv. 9-10).
- The fact that Abraham “died in a good old age, an old man and full of years” testify to God’s blessing (vv. 7-8).
- Isaac’s presence underscores the continuity of the promises.
- Isaac’s settling at Beer-lahai-roi suggests that Isaac not Ishmael is the heir of the promise (v. 11, cf. Gen 16:13-15).
* By collateral blessings I mean those Abrahamic blessings that fall on those not in the main line of the Abrahamic promises but who are blessed nonetheless due to their proximity to Abraham.