Let us now look at the biblical evidence for the doctrine of the Trinity—the belief in One God in three Persons: the Father, the Son, and the Holy Spirit. I will begin with the very opening of the Bible. In Genesis chapter 1, verse 1 says:
“In the beginning, God created the heavens and the earth.”
Then in verse 2 we read:
“And the Spirit of God was hovering over the face of the waters.”
And in verse 3 it says:
“And God said, ‘Let there be light,’ and there was light.”
The first verse speaks of “God”, the second of “the Spirit of God,” and the third of “God said”—which means the Word of God. These verses point to the Christian belief in one God in three Persons.
Let’s now turn to the Psalms. In Psalm 33:6, we read:
“By the word of the Lord the heavens were made, and by the breath of His mouth all their host.”
Here, just as Moses did before, David refers to the Lord, His Word, and the breath of His mouth as involved in the act of creation.
The same idea is clearly found in the book of Isaiah. In chapter 48, God says:
“I am the First and I am the Last” (a title for Christ in the New Testament).
“My hand laid the foundation of the earth, and my right hand spread out the heavens.”
Then in verse 16, the speaker says:
“From the beginning I was there; and now the Sovereign Lord has sent Me, and His Spirit.”
We understand that the one speaking is the Second Person, and He says: “The Lord God has sent Me and His Spirit.” If this is not the Trinity, then what is?
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Now we move to the New Testament. In Matthew chapter 3, we read the account of Jesus’ baptism by John the Baptist. The Gospel says:
“When Jesus was baptized, He immediately came up from the water, and behold, the heavens were opened to Him, and He saw the Spirit of God descending like a dove and coming to rest on Him; and a voice from heaven said: ‘This is My beloved Son, with whom I am well pleased.’”
Picture this scene: the Son is being baptized in the water, the Spirit descends like a dove, and the Father speaks from heaven. This is a clear image of the Trinity.
Since we are speaking of baptism, let us also look at the Great Commission in Matthew 28. Jesus says:
“Go therefore and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit.”
Note that He did not say “in the names of the Father and the Son and the Holy Spirit,” but rather “in the name” (singular), showing that the Trinity is One God.
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In John 14, Jesus says:
“And I will ask the Father, and He will give you another Helper, to be with you forever—even the Spirit of truth, whom the world cannot receive, because it neither sees Him nor knows Him.”
Here, the Son asks the Father to send the Holy Spirit. Could there be a clearer explanation of the Trinity?
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In Luke chapter 1, the evangelist tells us that when the angel Gabriel announced the birth of Jesus to the Virgin Mary, he said:
“Behold, you will conceive in your womb and bear a Son, and you shall call His name Jesus.”
Mary asked:
“How can this be, since I do not know a man?”
Gabriel answered—and please pay attention:
“The Holy Spirit will come upon you, and the power of the Most High will overshadow you; therefore, the Holy One who is to be born will be called the Son of God.”
So here we have three involved in the birth of the Savior:
1. The Holy Spirit,
2. God the Most High, and
3. The Holy One born, called the Son of God.
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The final evidence in this section is the Apostolic Blessing, which mirrors the threefold blessing of Aaron in the Old Testament. In Numbers 6, the Lord told Moses to instruct Aaron to bless the people, saying:
“The Lord bless you and keep you;
The Lord make His face shine upon you and be gracious to you;
The Lord lift up His countenance upon you and give you peace.”
Why is the Lord mentioned three times? For the same reason the Apostle Paul says in the Apostolic Blessing:
“The grace of the Lord Jesus Christ, the love of God, and the fellowship of the Holy Spirit be with you all.”
In other words, the entire Bible—from beginning to end—testifies to the doctrine of the Trinity. The Father, the Son, and the Holy Spirit are three Persons of one essence, one God, not three gods.
If you are still confused, ask God to grant you spiritual insight to know the truth. Only then will you understand the Apostle John’s words:
“The Son of God has come and has given us understanding to know Him who is true.”
Without this spiritual enlightenment, any effort to understand the truth is in vain.
