Grace, mercy, and peace set the tone, and Holy Trinity Sunday calls attention to what Scripture actually reveals about God. Scripture names Father, Son, and Holy Spirit united, three in one, even if the word Trinity is not in the Bible. The claim stands because the biblical testimony stands. A joke about Second Hezekiah lands the point that made-up books teach made-up things, but the Trinity is true and ancient, not new or optional.
Isaiah carries the weight early on. His vision of the Lord seated high, with seraphim crying “holy, holy, holy,” sketches a glory that convicts a sinner and then cleanses him with a live coal. That threefold holy hums in the background as Genesis also speaks, “Let us make man in our image,” hinting at plurality within the one God. The Angel of the Lord keeps stepping onto Old Testament soil as the presence of Yahweh himself, even staying Abraham’s hand on Moriah and providing the substitute. Then the Shema sounds, “The Lord our God, the Lord is one,” and the tension gets named straight. If he is one, how is he three?
The creeds step in, not to overrule Scripture but to echo it. The Athanasian Creed took shape because people were getting Jesus wrong. Adoptionism said he was a perfect man God chose, not truly God, because the Lord is one. The church answered by confessing what Scripture says about the Son’s deity and the Spirit’s person. Even clever illustrations wobble. The water analogy sounds good ish, until it slides into modalism, where God just changes hats. Jesus’ baptism will not allow that. The Son stands in the Jordan, the Spirit descends like a dove, and the Father speaks from heaven, all at once, coexisting all the time.
The creeds serve the church to remember, to confess, and to renounce errors. Memory slips, thoughts get muddy, and voices around keep pushing half-truths. Confession speaks back to God what God has said. Renunciation says no to what is close but not quite right. God’s image in humanity points to a Trinitarian stamp too. People are relational. People are body, soul, and spirit, and when those parts refuse to listen to each other, things break. Psalm 86 prays it clean: “Teach me your way, O Lord… unite my heart to fear your name.” Forgiveness in Jesus does that uniting. Forgiveness draws a person back into wholeness, and into fellowship with Father, Son, and Holy Spirit, and into a real unity with God’s people.
Key Takeaways
- 1. The Trinity stands on Scripture’s witness. Scripture names Father, Son, and Holy Spirit acting and speaking as God, even if the term Trinity is a later shorthand. Isaiah’s threefold holy, Genesis’ “let us,” and the Angel of the Lord’s presence form a coherent pattern, not a theological add-on. The claim is not clever philosophy but the Bible’s own way of talking about God. [39:07]
- 2. Creeds remember, confess, and renounce. The creeds steady a drifting memory and give the church true words to say back to God. They also draw a line against near misses that sound close but bend the gospel out of shape. Used rightly, they tune hearts and tongues to Scripture’s music, not a new melody. [46:30]
- 3. Modalism misses God’s triune life. The water analogy promises clarity and then erases real communion by turning persons into phases. Scripture refuses that shortcut by showing Father, Son, and Spirit acting together, not taking turns. The living God is not switching hats but loving in eternal fellowship. [45:28]
- 4. Unity flows from forgiven hearts. Disunity inside a person bleeds into disunity with God and others. The Lord answers Psalm 86’s plea by uniting the heart through the cross, reconciling a person to himself and knitting lives together. Forgiveness is not a sentiment but the power that restores communion. [49:14]
Youtube Chapters
- [00:00] - Welcome
- [36:34] - Trinity Sunday greeting
- [37:51] - Athanasian Creed out loud
- [38:36] - Trinity not a Bible word
- [39:56] - Isaiah’s holy, holy, holy
- [41:41] - Let us make man
- [42:13] - Angel of the Lord appears
- [42:33] - Shema and the puzzle of one
- [43:14] - Getting Jesus wrong in history
- [45:00] - Water analogy and modalism
- [45:59] - Jesus’ baptism shows three persons
- [46:30] - Why confess the creeds
- [47:32] - Made in God’s image, relational
- [48:41] - Unite my heart prayer
- [49:14] - Unity through forgiveness in Christ