Lesson 1 Exploring the Trinity with Sacred Art Catechism Connections Lesson Topics Trinity Essential Lessons Day 1 & 2 & 3 Lesson Vocabulary Proceed: To proceed means to come forth from. The Holy Spirit proceeds from the Father and the Son. Trinity: The Trinity is the Christian mystery revealed to us by God that He is three Persons in One God: God the Father, God the Son, and God the Holy Spirit. Mystery: A mystery is a truth about God that can come to know only with God’s help. Plan Trinity Puzzle Pieces pdf Lesson 1 Classroom Slides pptx Teach Detail from Boulbon Altarpiece (1460)jpg Extend Lesson 1 Absent Student Handout pptx Lesson 1 Parent Newsletter pdf