The Trinity, Creation, the Incarnation and the Last Days of Jesus
One God in Three Persons: The Trinity
Christians are monotheistic — they believe in one God. Yet Christianity teaches that this one God exists as three distinct persons: the Father, the Son and the Holy Spirit. Together these three form the Trinity. The three persons are not three separate gods and none is greater than another; each is fully God, yet genuinely distinct from the others.
The Nicene Creed is the Church’s official statement of this belief. It affirms one God, describes Jesus as “true God from true God, begotten not made,” and describes the Holy Spirit as proceeding from the Father. Reciting the Creed together in worship reminds Christians that the oneness of God is not compromised by belief in three persons — the doctrine is deliberately mysterious rather than contradictory.
Matthew 3:13–17 describes the baptism of Jesus in the River Jordan. All three persons of the Trinity appear together: the Son is baptised, the Holy Spirit descends like a dove, and the Father’s voice declares, “This is my Son, whom I love.” Christians use this passage as biblical evidence that the Trinity is rooted in Scripture, not invented later.
Each person of the Trinity has a distinct role. God the Father is the source of all things, the creator and sustainer of the universe. God the Son, Jesus Christ, reveals God to humanity by taking on human form. God the Holy Spirit is God’s active presence in the world today, guiding and strengthening believers. This belief shapes Christian worship: many services begin “in the name of the Father, and of the Son, and of the Holy Spirit,” and set prayers such as grace before meals address all three persons directly.
Trinitarian belief shapes worship across Christian traditions, though the emphasis differs. In more liturgical churches, the congregation recites the Nicene Creed most weeks, and services open and close with a Trinitarian blessing. In many Baptist, Pentecostal and other less formal evangelical churches, the Creed is affirmed as true but recited less often; instead, belief in the Trinity is expressed through prayer addressed to each person and through hymns that praise Father, Son and Holy Spirit together. Whatever the style, the doctrine underlines that Christians pray to, and are saved by, one God experienced as three persons.
The Creation of the Universe and of Humanity
The Bible’s main account of creation is found in Genesis 1–3. God creates the universe in an ordered sequence, bringing light, land, sea and living creatures into being by his spoken word: “God said, ‘Let there be light,’ and there was light.” Humanity is created last and given a special status — made “in the image of God” and given responsibility for the rest of creation. John 1:1–18 tells the same story from another angle: “In the beginning was the Word, and the Word was with God, and the Word was God… Through him all things were made.” For Christians, this means Jesus — the divine Word — and the Holy Spirit, who was present over the waters in Genesis 1:2, were both active in creation from the very start.
Christians read the Genesis creation account in divergent ways. A literal interpretation treats the six days as six actual 24-hour days. A metaphorical interpretation treats the days as a literary structure expressing the truth that God is the sole creator, without claiming to describe the scientific mechanism. Both readings agree God is creator; they differ on how literally the text should be taken.
Creation matters to Christians today because it establishes that the universe and human life have purpose and value: they are not accidents but the deliberate work of a loving God. This underpins Christian teaching on caring for the earth and on the unique worth of every human being, since all people are made in God’s image.
The Incarnation
The incarnation is the belief that God the Son became a real human being in Jesus of Nazareth. John 1:14 states: “The Word became flesh and made his dwelling among us.” Christians describe Jesus as fully God and fully human at the same time — not half of each, but completely both. 1 Timothy 3:16 gives an early creedal summary of this belief: “He appeared in the flesh, was vindicated by the Spirit… was believed on in the world, was taken up in glory.”
The incarnation matters to Christians today because it means God is not distant or unknowable. In Jesus, God has shown what he is like in a way humans can understand, and because Jesus experienced human life fully — including hunger, tiredness and grief — Christians believe he can identify with human suffering and weakness.
Some Christians stress the incarnation as proof of God’s humility — that the creator of the universe chose to enter his own creation as a vulnerable baby. Others stress it as proof of God’s love — that God was willing to share fully in human experience, including suffering, rather than remain distant from it. Both emphases lead to the same practical conclusion: because Jesus was genuinely human, his example of how to live can be followed by other humans, and because he was genuinely God, that example carries divine authority.
The Last Days of Jesus’s Life
Luke 22–24 gives a detailed account of the final days of Jesus’s earthly life. At the Last Supper (Luke 22:7–23), Jesus shares a final meal with his disciples, breaking bread and saying, “This is my body given for you; do this in remembrance of me.” That night Judas betrays him, and Jesus is arrested in the garden of Gethsemane. He then faces trial before the Jewish religious leaders and before the Roman governor, Pilate, who eventually agrees to have him executed.
Jesus is crucified — nailed to a wooden cross — and dies. He is buried in a tomb. Luke 24 then describes the discovery of the empty tomb and the resurrection: Jesus appears alive to his followers. Forty days later, Luke 24:50–53 records the ascension, when Jesus returns to the Father in heaven.
These events help Christians understand who Jesus is. The crucifixion shows Jesus’s full humanity — he genuinely suffered and died. The resurrection shows his full divinity — only God has power over death. Together, the last days of Jesus’s life (Last Supper, betrayal, arrest, trial, crucifixion, resurrection, ascension) confirm the Christian belief that Jesus is both truly human and truly God.