Contradiction with Genesis 21:5
This verse states that Abraham was 100 years old when Isaac was born, which does not directly contradict 1 Chronicles 1:27, but implies a timeline that could conflict with interpretations of genealogies.
Genesis 21:5: And Abraham was an hundred years old, when his son Isaac was born unto him.
Contradiction with Genesis 16:16
This verse indicates that Abram was 86 years old when Hagar bore Ishmael, which establishes a timeline potentially conflicting with 1 Chronicles 1:27 if interpreted differently.
Genesis 16:16: And Abram [was] fourscore and six years old, when Hagar bare Ishmael to Abram.