Trinity of Jesus Christ

The first person who spoke about the God's Trinity was Jesus Christ, that too He reveled only after his death and resurrection - 18.Jesus came and said to them, All authority in heaven and on earth has been given to me. 19.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, 20.teaching them to observe all that I have commanded you. And behold, I am with you always, to the end of the age - Matthew 28:18-20

That was the reason Christians alone have the knowledge of the Triune God, "Father, Word, and the Holy Spirit", any non Christian including Jews does not know anything about the Trinity, and if a jew understood this, he could not be a Jew, he must have to accept Jesus Christ and become a child of God, but the common opinion about Jesus Christ is that he is the second person in the Triune God, but this opinion undoubtedly raises the following questions.

• If Jesus Christ is the second person in the Trinity, how can the second person be the son of the first person? - You are my Son; today I have begotten you - Psalms 2:7
  
  

• If Jesus Christ is the second person in the Trinity, then it seems as if the Father, who is the first person, handed over the second person to the cross, because Christ himself said this - Father who sent me has himself testified concerning me - John 5:37

• If Jesus Christ is the second person in the Trinity, then He should be called the very image of the Word, but the Bible calls Him the very image of God, If He is the image of God, then He must not only be the Word, but also possess the Father and the Holy Spirit - Jesus Christ is the image of the invisible God, the firstborn of all creation - Colossians 1:15

• When Christ said, that the Father would be with me even in the cross, that means Father also suffered along with Christ? - Behold, the hour is coming, indeed it has come, when you will be scattered, each to his own home, and will leave me alone. Yet I am not alone, for the Father is with me - John 16:32

• If the resurrected Jesus Christ gave commands through the Holy Spirit, that means Holy Spirit was with Christ even at the time of Crucifixion? - In the first book, O Theophilus, I have dealt with all that Jesus began to do and teach, until the day when he was taken up, after he had given commands through the Holy Spirit to the apostles whom he had chosen - Acts 1:1-2
  
  

The answer to this has been explained throughout the Bible, and there is no doubt that understanding of these things will bring us even closer to the Lord Jesus Christ, so, will see them in below topics.

Chapter 1: In the name of

Chapter 2: I am Gods

Chapter 3: My Witness is True

Chapter 4: Abraham's Explanation

Chapter 5: Isaac's Explanation

Chapter 6: Jacob's Explanation

Chapter 7: Moses Explanation

Chapter 8: Except the sign of the prophet Jonah

Chapter 9: Eli, Eli, lama sabachthani?

Chapter 10: Door, Shepherd, and Porter

Chapter 11: Son of Man came eating and drinking

Chapter 12: Korah's Explanation

Chapter 13: Elijah's Explanation

Chapter 14: Ezekiel's Explanation

Chapter 15: Law or the Prophets

Chapter 16: Altar, Temple, and Throne 

Chapter 17: Zechariah's Explanation

Chapter 18: Full of Grace and Truth