# Commentary on Revelation Word Study – Hallelujah > *Hallelujah* (Rev 19:1, 3, 4, 6) - *Hallēluia* (Gk.): A transliteration of two Hebrew terms meaning \"Praise the Lord!\" It occurs only four times in the NT but is often used in the OT as a liturgical acclamation, especially in the Psalter. Certain psalms, for instance, are framed by this expression, which serves as an opening and closing line (Ps 135, 146-50). It is also a recurrent acclamation in the Hallel Psalms that were traditionally sung during the Jewish Passover meal (Ps 113-18). Some scholars thus maintain that the Passover liturgy is the background of the repeated \"Hallelujah\" in Rev 19:1-6, since the song builds up to the \"marriage supper of the Lamb\" (Rev 19:9). This is the triumphal banquet celebrated by the redeemed of the new Exodus, saved by the blood of Christ, the new Passover Lamb (Rev 5:6-10; 15:2-3). The \"Hallelujah\" has since passed into the liturgical vocabulary of the Church, where the Eucharist is celebrated as a memorial of the new Exodus accomplished through Christ (CCC 1340). --- > Scott Hahn and Curtis Mitch, *The Ignatius Catholic Study Bible: New Testament*, Revised Standard Version, Second Catholic Edition (San Francisco: Ignatius Press, 2010).