"The Lamb," composed by John Tavener, is often performed during Christmas services due to its themes of innocence, purity, and the profound connection between humanity and divinity. The piece reflects the nativity story, symbolizing the humble beginnings of Jesus Christ, often referred to as the "Lamb of God."

The gentle and meditative nature of the music aligns with the reflective mood of the Christmas season, making it a fitting choice for services that celebrate the birth of Christ. Additionally, the text and music evoke a sense of peace and hope, resonating with the core messages of Christmas.

Many churches incorporate "The Lamb" into their services to enhance the worship experience, creating a contemplative atmosphere that invites congregants to reflect on the significance of the holiday. The performance of such works during this time helps to deepen the spiritual engagement of attendees.

For more insights on the significance of this piece in Christmas liturgy, you may refer to musicology resources or church liturgical guidelines that discuss the integration of choral works in worship settings.