Revelation 19:1-6: After this I heard what seemed to be the loud voice of a great multitude in heaven, crying out, "Hallelujah!
In Hebrew, the word hallelujah/Yah means to rejoice in praising God. Hallelujah, also spelled alleluia, Hebrew liturgical expression meaning “praise ye 𐤉𐤄𐤅𐤄 in short Yah” (“praise the Lord”) 𐤉𐤄𐤅𐤄. In the Hebrew Bible, it is a compound word, from hallelu, meaning “to praise joyously,” and yah, a shortened form of the unspoken name of God.