the queen: This was probably Nitocris, the queen-mother, widow of Evil-merodach, son of Nebuchadnezzar, and father of Belshazzar.
O king: Daniel 2:4, Daniel 3:9, Daniel 6:6, Daniel 6:21; 1 Kings 1:31
let not: Genesis 35:17-18; 1 Samuel 4:20-22; Job 13:4, Job 21:34