Book of Esther
Repetition is one of the main stylistic features of the book of Esther. The three groups of banquets come in pairs; there are two lists of the king's servants; two reports that Esther hid her identity; two gatherings of women; two houses for the women; two fasts; two talks by Haman with his wife and friends; two sudden visits to the king by Esther; two coverings of Haman's face; two royal commands; two cool-downs of the king's anger; two days for the Jews to protect themselves and take vengeance; and two letters about how Purim started.