Agnus Dei is a Latin phrase that means "Lamb of God." This term is often used in Christian worship to refer to Jesus Christ and his sacrificial death on the cross. The phrase has been used in various forms throughout history, and many synonyms have been developed to express the same idea. Some common synonyms for Agnus Dei include "Lamb of God," "Savior," "Redeemer," "Son of God," and "Messiah." These terms all refer to Jesus Christ and his role in the salvation of humanity. Each synonym carries with it a different emphasis and understanding of the work of Christ in the world.