"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 Eucharist or Mass. The hymn expresses joy and praise, acknowledging God's greatness and the peace He brings to humanity. The phrase originates from the Gospel of Luke, where angels proclaim it to shepherds at the birth of Jesus Christ. Over the centuries, "Gloria in Excelsis Deo" has been set to music by various composers, becoming a significant part of Christian liturgical traditions and a symbol of worship across different denominations.