In surah Al-Kahf verses 60-82. the term bahrain has a deeper connotation than its lexical sense. It is because the passage is linked to the story of Musa and Khidr. The two prophets reflect the several types of knowledge that the term bahrain encompasses. https://www.alarecre.com/Virescent-Harmony-Galaxy-A14-5G-Clear-Case-p106336/