Why do we say the prayer Gloria?

The prayer "Gloria," also known as the "Gloria in Excelsis Deo," is a hymn of praise to God that expresses joy and gratitude for His glory and the peace brought by Jesus Christ. It is traditionally recited during Christian liturgies, particularly in the Mass, to acknowledge God's greatness and to celebrate the incarnation of Christ. The prayer serves to elevate the worship experience, inviting the congregation to join in a collective expression of reverence and Thanksgiving. Through the Gloria, believers affirm their faith and unity in Christ's message of hope and salvation.