בראשית, פרק י״א, פסוק כ״א

The life of Reu spanned a total of two hundred and thirty-nine years. A large portion of his life unfolded after the birth of his son Serug, lasting another two hundred and seven years. The counting of this specific period follows a distinct numerical pattern, where the seven serves as a direct addition to the foundational base number of two hundred [קאסוטו].