So
"So, king of Egypt," is once mentioned in the Bible -- 2Ki 17:4 So has been identified by different writers with the first and second kings of the Ethiopian twenty-fifth dynasty, called by Manetho, Sabakon (Shebek) and Sebichos (Shebetek).
Bibliography Information Smith, William, Dr "Definition for 'So' Smiths Bible Dictionary". bible-history.com - Smiths; 1901.