"Hallelujah" was widely used in the Old Testament. It most often appears in the Old Testament Psalms, because the psalms are used by Israelis to sing and worship, so the beginning of the hymn is often called "Hallelujah" (Praise the Lord) to invite the congregation to sing and praise together.
Extended data
Hallelujah related words:
I Emanuel
Emmanuel, a Christian religious term, means "God is with us". This noun appeared only twice in the Old Testament (Isaiah 7: 14, August 8) and once in the New Testament (Taiyi XXIII), all of which were literally translated as "Emmanuel".
Second, amen.
Amen, meaning "sincere and true", is a religious term in Judaism and Christianity, which means to express agreement or affirmation during worship and prayer. Ancient Jews often called "Amen" in worship and assembly to show their approval or support. In the New Testament, Jesus used "Amen" as the end of prayer, and Christianity used this word as the end of prayer and liturgy, indicating "sincerity".