Simplify the following text for a Grade 5 native English-speaking person.
Original: Ahab or Ach ` av or Achab in Douay-Rheims was king of Israel and the son and successor of Omri according to the Hebrew Bible .
Simplified: Ahab or Ach ` av or Achab in Douay-Rheims was King of Israel and the son of Omri .