Hallelujah (/ˌhæləˈluːjə/ HAL-ə-LOO-yə; Biblical Hebrew: הַלְלוּ־יָהּ, romanized: haləlū-Yāh, Modern Hebrew: הַלְּלוּ־יָהּ, romanized: halləlū-Yāh, lit. 'praise Yah') is an interjection from the Hebrew language, used as an expression of gratitude to God.[1][2] The term is used 24 times in the Tanakh (in the book of Psalms), twice in deuterocanonical books, and four times in the Christian Book of Revelation.[3]
The phrase is used in Judaism as part of the Hallel prayers, and in Christian prayer,[3] where since the earliest times[4] it is used in various ways in liturgies,[5] especially those of the Catholic Church, the Lutheran Churches and the Eastern Orthodox Church,[6][7] the three of which use the Latin form alleluia which is based on the alternative Greek transliteration.[1]
Alleluia is the Latin form of Hallelujah, an acclamation formed by joining "Hallelu" (to praise) with the first syllable in a Hebrew name for God, Yahweh.
Hardon1985
was invoked but never defined (see the help page).