That was point. So many things people can't explain. It's because they're not there.
Sorry to interrupt here. I just want to say what I know about the topic of the Trinity. In
1John 5:7 says that there are three that bear witness in heaven. The Father, the word and the Spirit, and these three are one. Yes this verse is one of the few that speaks, that makes a relation with the trinity in a clear way. Then depends on the version we want to read aswell, but even excluding this verse I can see the trinity in the Bible. Let's see what aswell is the purpose of the trinity. What does it teach or show? It gives the same authority, the same importance to all three of them. To the Father, to the Son and to the Spirit, because they are actually one thing. It means that acknowledging this we give honor, importance to the Son and to the Spirit. I think this is what they meant when they came up with the word trinity. The Son would react in any situation all the time as the Father would. He has the same character. We see it in
John 14:9. Jesus said to Philip " He who has seen me, has seen the Father ". And so is the Spirit.
He is the same. The fact of how is that Jesus was praying to the Father while he was on the earth is that God is omnipresent and obviously He can be on the earth and in heaven in the same time. He also showed us example of how a perfect son, man would do. And He was a man aswell. That's a mistery. And the same is with the spirit. How can God answer or take heed to thousands of prayers made in the same time. His mind is so great and he is omnipresent. The fact is that God has manifested himself in the Son and in the Spirit. We also get the great commission telling us to baptize all the nations in the name of the Father, the Son and the Holly Spirit. In various places in the old and the new testament we see the presence of the Father and the Son. For example in the parable in Luke 13 of the barren fig three we see a man ( that represents God ) having a fig three in his vineyard and that tree not bearing a fruit. He wanted to cut it but stop because of the words of the keeper ( the Son) of the vineyard telling him to give it a chance. Do we think that God would have to answer or give an account to anyone. To no one but to himself. And He listened to the Son. This tells us how important is the Son that is the Father himself. They are one. And the Son manifests himself today in the Spirit because He said: It is to your advantage that I go away for if I do not go away, the Helper will not come to you; but if I depart, I will send Him to you. John 16:7
Jesus is the part of God that showed mercy, that wants to give an opportunity. And obviously that mercy can run out one day since He said that if the tree still doesn't bear fruit after the opportunity given HE will cut it. The Son will execute the judgement. The judgement is given to him. He will judge the nations. God will judge the world through the same mercy that was shown to them. And why that mercy? Because Jesus died. That was the only way. That's why we are christians. Because of that sacrifice. Because we give importance to the Son. To that work for salvation that the Father performed. Jesus wasn't just a man or a great example. He was much more. He and the Father are one. In that book of John says it many times: Beleive Me that I am in the Father and the Father in me.
I believe that that's why is important to believe in the trinity. Those who do give an importance to the Son that is God himself, because He is a work of God. It is not only because of a doctrine's point of view. Once someone asked me should he in his prayer use only the name of Jesus or should he use God. I told him that is the same. The most important is to believe and follow the way of Jesus ( God ).
This is how I see it through my experience. There other places in the old testament aswell showing the presence of the Father and the Son in the same place.