And Ahijah - There is no “and” in the original. Hence, some would read: “the sons” were born “of” or “from Ahijah,” the first wife of Jerahmeel (see the next verse).
Related Commentaries of 1 Chronicles 2:25
1 Chronicles 2:25
25 And the sons of Jerahmeel the firstborn of Hezron were, Ram the firstborn, and Bunah, and Oren, and Ozem, and Ahijah.