This refers to the fifth year of Rehoboam's reign as king. Alternate translation: "in the fifth year that Rehoboam was king" (See: [[rc://en/ta/man/translate/figs-explicit]])
"Shishak king of Egypt" represents himself along with the Egyptian army. Alternate translation: "Shishak king of Egypt, and his army with him, came up against Jerusalem" (See: [[rc://en/ta/man/translate/figs-synecdoche]])