The trinity can be confusing. But it is true. I just have two points to make.
I have never been convinced of a Trinity. Why? Too many to mention.
The Trinity must be taken as a whole. If ONE tenet in the doctrine is false, it comes tumbling down.
Jesus IS NOT equal to the Father, he said, "the Father is greater."
Jesus isn't all knowing, he said "only the Father knows the day and hour of his return."
Jesus said, "says he can do nothing on his own" proving his subordination to the Father.
Jesus proclaimed Himself to be the “Alpha and Omega.” The BEGINNING and the END. Trinitarians tell us that statement indicates Jesus WAS AT THE BEGINNING. However, beginning implies a beginning, and Jesus is saying that he WAS the FIRST of all of God's creation...NOT that he was there. The Textus Receptus also supports this. The word FIRSTBORN comes from the terms BEFORE-most-BROUGHT-FORTH.
Jesus said "blasphemy against him will be forgiven but blasphemy against the holy spirit will not." If they were the same person, blasphemy against one would be blasphemy against the other. That alone destroyes the Trinity doctrine!
1. God did not bend the rules for Himself.
God wanted to do the whole ''God in the flesh'' thing properly. No ''cheating''. He wanted to be as vulnerable, isolated and as weak as were are. He is an authentic God. The verse you raised and all the times Jesus spoke to God, asked for the cup to be removed, was forsaken, beaten and crucified when He could all 1000 angels. This all points to authenticity.
That all points to the fact that Jesus was a man and not fully God.
Jesus was not God the Father. Jesus was God the Son.
Nowhere in the bible is Jesus referred to or called "God the Son." That's a total Trinitarian invention.
2. Jesus was crucified for making Himself equal with God.
John 5:18 Therefore the Jews sought the more to kill him, because he not only had broken the sabbath, but said also that God was his Father, making himself equal with God.
You need to read the entire chapter, especially what Jesus said right AFTER the Pharisees said this...
"Therefore the Jews sought the more to kill him, because he not only had broken the sabbath, but said also that God was his Father, making himself equal with God."
Then Jesus replied, now notice what he said...
Then answered Jesus and said unto them, Verily, verily, I say unto you,
The Son can do nothing of himself, but what he seeth the Father do: for what things soever he doeth, these also doeth the Son likewise.
It was the perception of the Pharisees that Jesus was making himself equal to God
because He was healing on the Sabbath. Jesus responds to that accusation by saying...
"The Son can do nothing of himself" proving he is subject to and not equal to the Father.
The Pharisees also accused Jesus of making himself out to be God in John 10:33-36. Notice what he said...
John 10:33-36 The Jews answered Him, saying, "For a good work we do not stone You, but for blasphemy, and because You, being a Man, make Yourself God."
Jesus answered them, "Is it not written in your law, 'I said, "You are gods" '?
Jews always knew the link between the Messiah (Son) and God. Isa 9:6 spells it out with crystal clarity '' For to us a child is born, to us a son is given, and the government will be on his shoulders. And he will be called Wonderful Counselor, Mighty God, Everlasting Father, Prince of Peace''.
Many Jews at the time wanted to crucify Him for breaking their commandments. Like the Sabbath. But if we read Mark 2:27 we see that Jesus says He can break it, because He is God for whom the Sabbath was made.
That's correct and that explains why the Pharisees wrongly believed Jesus was making himself equal to the Father and
Jesus reaffirms he's not equal to God by saying "he can do nothing on his own!" 'Mighty God' isn't the same as ALMIGHTY GOD! You do know that we are also called God? Jesus is a God like we are called a god because of position and nothing else.
When asked by the people to show them the Father, He says in John 10:30 I and the Father are one.
What did Jesus say in verse 29? "My Father, which gave them me, is greater than all." What did he say just a few verse after - v. 34-35...
"Jesus answered them, Is it not written in your law, I said, Ye are gods? If he called them gods, unto whom the word of God came, and the scripture cannot be broken;"
Not one verse you've quoted even implies a co-equal trinity. Being one implies the Father and Jesus are undivided. They have the same objectives, mission, intention, and purpose.
People need to look at the trinity doctrine as a whole because that's why it comes tumbling down. It's actually a heretical Catholic doctrine that many people have been murdered over.