Genesis 11:14

14 When Shelah was 30 years old, he had a son, Eber;

Genesis 11:14 Meaning and Commentary

Genesis 11:14

And Salah lived thirty years, and begat Eber.
] He had a son born to him five years sooner than his father had; of Eber, (See Gill on Genesis 10:25).

Genesis 11:14 In-Context

12 When Arpachshad was 35 years old, he had a son, Shelah;

13 after that, he lived another 403 years and had other children.

14 When Shelah was 30 years old, he had a son, Eber;

15 after that, he lived another 403 years and had other children.

16 When Eber was 34 years old, he had a son, Peleg;