As I said, whatever reason you have for proving what you believe about the Trinity, they will have the same kind of reasons to prove their understanding of the Lord Jesus. So neither of you will ever concede.
And regarding the question I asked about who should declare which one is the truth, you still haven't answered who that should be. That means you are not interested in finding out the truth, and you are simply going to stand by the belief that your understanding of the Lord Jesus based on the Trinity is the truth.
It is not just "my belief". Father, Son and Holy Spirit all being fully God are taught in the Bible. We are not left to wonder. God makes it clear in His word. There are many references to there being one God. John makes clear that Jesus Christ is fully God:
NKJV Jhn 1:1 In the beginning was the Word, and the Word was with God,
and the Word was God.
Jhn 1:2 He was in the beginning with God.
Jhn 1:3 All things were made through Him, and without Him nothing was made that was made.
Jhn 1:14
And the Word became flesh and dwelt among us, and we beheld His glory, the glory as of the only begotten of the Father, full of grace and truth.
Acts makes clear that the Holy Spirit is God:
NKJV Act 5:3 But Peter said, "Ananias, why has Satan filled your heart
to lie to the Holy Spirit and keep back part of the price of the land for yourself?
Act 5:4 While it remained, was it not your own? And after it was sold, was it not in your own control? Why have you conceived this thing in your heart?
You have not lied to men but to God."
Only by ignoring such passages, or by making them say something they don't say, like the Jehovah's |Witnesses saying that John 1:1 should state that the word was a god instead of "the Word was God", can anybody say that the Trinity is not taught in Scripture.
There is no longer anything for us to discuss about how to recognize the true Jesus whom the apostles knew.
However, we have come to know the one true God because He confirms to us the truth of Ecclesiastes 1:9 and Matthew 24:35.
Therefore, He revealed to us that during His time, He had already encountered four different understandings of who He was. He also revealed the truth regarding these four different understandings of Him, which are no different from the four different understandings people have of Him today.
Of course Jesus is fully God, and knows all things. He knows what different ideas people have about Who He is. You say they are the same ideas today that people have always had. I would say that is not the case. When Jesus was here on earth, some people thought He was John the Baptist and some thought He was a reincarnation of one of the Old Testament prophets. Not many people believe those things now.
And as for how to recognize the true Jesus, He revealed it to His apostles and disciples.
In the same way, the Lord Jesus has revealed to us how to recognize the true Jesus whom the apostles knew.
And in coming to know the true Jesus, we have also come to know the one true God.
JOHN 8:19
19 Then said they unto him, Where is thy Father? Jesus answered, Ye neither know me, nor my Father: if ye had known me, ye should have known my Father also.
Yes, and it is through His word, the Bible that we learn Who He is. That is why the apostle Paul, in 1 Corinthians 15,, used the phrase "according to the Scriptures" when talking about the Lord Jesus Christ:
NKJV 1Co 15:1 Moreover, brethren, I declare to you the gospel which I preached to you, which also you received and in which you stand,
1Co 15:2 by which also you are saved, if you hold fast that word which I preached to you—unless you believed in vain.
1Co 15:3 For I delivered to you first of all that which I also received: that Christ died for our sins
according to the Scriptures,
1Co 15:4 and that He was buried, and that He rose again the third day
according to the Scriptures,
,
