Trinity Sunday is a day marked to celebrate the Holy Trinity and is observed on the Sunday following Pentecost. Synonyms for Trinity Sunday include "Triune Sunday," "Sunday of the Trinity," and "Feast of the Holy Trinity." This day holds significance in the Christian faith as it helps believers acknowledge and honor God's threefold nature. The Trinity represents the Father, Son, and Holy Spirit, and Trinity Sunday serves as a day to reflect on the significance of this belief. Christians around the world participate in various services and celebrations to commemorate the Holy Trinity's role in their faith and lives.