in which book of the bible does the word alleluia appear 4 times
Hallelujah The Greek transliteration ἀλληλούϊα (allēlouia) appears in the Septuagint version of these Psalms, in Tobit 13:17 and 3 Maccabees 7:13, and four times in Revelation 19:1–6, the great song of praise to God for his triumph over the Whore of Babylon.[5][6] It is this usage that Charles Jennens extracted for the Hallelujah Chorus in Handel's Messiah.
Book of Esther The Book of Esther, also known in Hebrew as "the Scroll" (Megillah), is a book in the third section (Ketuvim, "Writings") of the Jewish Tanakh (the Hebrew Bible) and in the Christian Old Testament. It is one of the five Scrolls (Megillot) in the Hebrew Bible. It relates the story of a Hebrew woman in Persia, born as Hadassah but known as Esther, who becomes queen of Persia and thwarts a genocide of her people. The story forms the core of the Jewish festival of Purim, during which it is read aloud twice: once in the evening and again the following morning. The books of Esther and Song of Songs are the only books in the Hebrew Bible that do not explicitly mention God.[2]