"Gloria In Excelsis Deo" is a Latin phrase that translates to "Glory to God in the highest." It is a hymn that celebrates the glory of God and is often sung in Christian worship services, particularly during the Mass in the Roman Catholic Church. The hymn expresses joy and praise, acknowledging God's greatness and the peace He brings to humanity. The origins of this hymn date back to the early Christian church, and it is included in the Liturgy of the Eucharist. The text is derived from the angels' proclamation at the birth of Jesus Christ, as described in the Gospel of Luke. Over the centuries, many composers have set the hymn to music, making it a beloved part of Christian liturgical tradition.