Alleluia (from the Hebrew Hallelu-Yah) is the Church's great song of joy, especially associated with the Resurrection and the Easter season (CCC 1096). It is the 'song of the redeemed' who praise God for His victory over death.
Liturgical Use
In the Mass, the Alleluia is sung before the Gospel to welcome and greet the Lord who is about to speak (CCC 1154). It is omitted during the season of Lent as a sign of penance and preparation (CCC 1096).
Frequently Asked Questions
Do we say Alleluia in heaven? The Book of Revelation describes the great multitude in heaven singing 'Alleluia!' as they worship God on His throne (Revelation 19).
May the Lord bless you and keep you.