I won't keep you long today, but you need to notice a couple of things in today's reading. In Genesis 25, Abraham remarries after Sarah's death and has six more sons. We know God has already declared Isaac to be the only son of Abraham, so Abraham is obligated to send the other six sons away because they can't be counted as heirs along with Isaac.

The next thing we read about Abraham is that he died at 175. The timeline in the Bible is complicated to follow at times, but it is entirely doable. In this case, the author of Genesis, likely Moses, kills off Abraham and moves on with the story of Isaac. Abraham lived long enough to meet his grandsons and be involved in their lives for fifteen years, but if we read the text casually, we will conclude that Abraham died before the twins were born. That isn't the case. And remember, Shem, the son of Noah, is still alive and kicking, too. But we haven't seen him since chapter 11...