Using only the words spoken by Jesus Christ himself, we will look into what he revealed about the Trinity:
What He revealed in the Gospel of Matthew
Matt 12:50 – “Whoever does the will of my Father who is in heaven is my brother, sister, and mother.”
While Jesus was on the Earth his Father was in heaven – two different individuals in two different locations. It is the will of the Father, not the Son, that Jesus was following.
Matt 12:31,32 – “I tell you that any sinful thing you do or say can be forgiven. Even if you speak against the Son of Man, you can be forgiven. But if you speak against the Holy Spirit, you can never be forgiven, either in this life or in the life to come.”
If it is completely different to sin against the Son than it is to sin against the Holy Spirit, then the Holy Spirit cannot be the same as the Son.
Matt 26:39 – “Then he went a short distance farther and fell on his face and prayed, “My Father, if it’s possible, take this cup of suffering away from me. However—not what I want but what you want.”
Another instance of Jesus submitting to the will of a higher being.
Matt 28:19 – “Therefore, go and make disciples of all nations, baptizing them in the name of the Father and of the Son and of the Holy Spirit.”
Yes, he mentioned the three entities, but notice that he does not link them together as one, and he makes no mention of them being the same person.
What He revealed in the Gospel of Mark
Mark 13:32 – “But nobody knows when that day or hour will come, not the angels in heaven and not the Son. Only the Father knows.”
If Jesus was God, then why wouldn’t he know the day or the hour? And where is mention of the third “person”, the Holy Ghost? Yet another clear indication that the Father is a separate, superior being.
What He revealed in the Gospel of Luke
Luke 18:18-19 – ‘A leader of the people asked Jesus, “Good Teacher, what must I do to have life that lasts forever?” Jesus said to him, “Why do you call Me good? There is only One Who is good. That is God.”‘
Translations vary, between “God” and “the Father” in this passage, but the meaning is the same. Jesus is telling his followers not to raise him to the level of God the Father, who is superior to him.
What He revealed in the Gospel of John
John 8:18 – “I am one witness concerning myself and the Father who sent me is the other.”
Again, Jesus states that it is the Father who sent him. Again, no mention of the Holy Spirit. Wouldn’t there be three witnesses if the Holy Spirit were truly part of a divine trinity?
John 17:1-4 – “Father, the time has come. Glorify your Son, so that the Son can glorify you. You gave him authority over everyone so that he could give eternal life to everyone you gave him. This is eternal life: to know you, the only true God, and Jesus Christ whom you sent. I have glorified you on earth by finishing the work you gave me to do.”
How could the Father give authority to Jesus if they were the same person? Yet another example of the relationship between the Father and the Son without mention of the Holy Spirit.
John 17:21,22 – “I want all of them to be one with each other, just as I am one with you and you are one with me. I also want them to be one with us. Then the people of this world will believe that you sent me.”
Supporters of the Trinity doctrine argue that Jesus said that he and the Father are “one”, thus confirming their belief that they are the same person. But Jesus is here saying that his followers can be “one” with them, too. Do his followers then become part of the divine trinity? Obviously not.
John 14:28 – “You have already heard me say that I am going and that I will also come back to you. If you really love me, you should be glad that I am going back to the Father, because he is greater than I am.”
If the Father is greater than the Son, how can they be the same person? It is impossible. And it’s also impossible for someone to “come back to” themselves. Jesus was clearly referring to a separate person to whom he was returning.
What this teaches us
The Trinity doctrine was never taught by Jesus in any shape or form. By his own words we can see that he knew he was inferior to his Father, whom he called “the only true God”. It was by the superior will of God that Jesus was sent forth, and by the power of God that he was able to do what he did. After completing the mission assigned to him by God, Jesus returned to his Father, who had been waiting in heaven.
Something that Jesus said, knowing that people in the future would be misled:
Matt 15:6-9 – ‘Isaiah told about you. He said, “These people show respect to Me with their mouth, but their heart is far from Me. Their worship of Me is worth nothing. They teach what men have made up.”’
By studying the Gospels, we can see the difference between what Jesus taught and what men have fabricated. Jesus thus reveals to us that the Trinity is not a Bible doctrine.