Pastor walks his children through Children's Catechism question 7—especially explaining how the Triune God has been pleased to make Himself known as Triune, especially through His Son. Q7. In how many persons does this one God exist? In three persons. The sermon explores the Christian doctrine of the Trinity, emphasizing that the one God exists in three distinct persons: Father, Son, and Holy Spirit. It clarifies that while hints of the Trinity are present in the Old Testament, the full revelation of this truth is uniquely associated with the incarnation of Jesus Christ. The presentation highlights the personal properties of each person within the Godhead—the Father begetting, the Son being begotten, and the Spirit proceeding—and underscores the significance of understanding this doctrine for authentic Christian faith, asserting that belief in the Trinity is essential for belonging to Christ and becoming a Christian.