1 Chronicles 1:28
The sons of Abraham were Isaac and Ishmael.
What it says
Abraham’s sons are named as Isaac and Ishmael, placing both branches at the head of this new section.
What it is doing
It introduces the family lines that descend directly from Abraham.
In context
28The sons of Abraham were Isaac and Ishmael. 29These are their genealogies: 30Nebaioth the firstborn of Ishmael, then Kedar, Adbeel, Mibsam, Mishma, Dumah, Massa, Hadad, Tema, 31Jetur, Naphish, and Kedemah. These were the sons of Ishmael. 32The sons born to Keturah, Abraham’s concubine: 33The sons of Midian: 34Abraham was the father of Isaac. The sons of Isaac: