God, Jesus and the Holy Spirit are one as in one mind.
The scripture teaches that they, in fact, are the same God, the one and only.
Joh 1:1-3;10;14 In the beginning was the Word, and the Word was with God, and the Word was God. (2) The same was in the beginning with God. (3) All things were made by him; and without him was not any thing made that was made... (10) He was in the world, and the world was made by him, and the world knew him not... (14) And the Word was made 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.
Joh 8:56-59 Your father Abraham rejoiced to see my day: and he saw it, and was glad. (57) Then said the Jews unto him, Thou art not yet fifty years old, and hast thou seen Abraham? (58) Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I am. (59) Then took they up stones to cast at him: but Jesus hid himself, and went out of the temple, going through the midst of them, and so passed by.
The proof is so strong that, even if the enemies of Christ's divinity manage to shed doubt on one or two verses, there are dozens more to use. And the foundation of this doctrine isn't in the New Testament, it goes back to the Old. The force of the Trinity's argument is so irresistible, that the opponents of Christ's divinity must flee from the entirety of the scriptures as much as possible.
Jesus said his father was greater than him, which is enough for me to believe they are not the same. At the crucifixion, Jesus asked why he had forsaken him as well, a sign that there were two entities separated for a time. And why would Jesus ask the cup to pass from him, if he had the total control of Gods plan of salvation?
His speech and suffering on the cross, itself, were predicted in great detail.
Mat 27:43-46
He trusted in God; let him deliver him now, if he will have him: for he said, I am the Son of God. (44) The thieves also, which were crucified with him, cast the same in his teeth. (45) Now from the sixth hour there was darkness over all the land unto the ninth hour. (46) And about the ninth hour Jesus cried with a loud voice, saying, Eli, Eli, lama sabachthani? that is to say,
My God, my God, why hast thou forsaken me?
Psa 22:1-8 To the chief Musician upon Aijeleth Shahar, A Psalm of David.
My God, my God, why hast thou forsaken me? why art thou so far from helping me, and from the words of my roaring? (2) O my God, I cry in the daytime, but thou hearest not; and in the night season, and am not silent. (3) But thou art holy, O thou that inhabitest the praises of Israel. (4) Our fathers trusted in thee: they trusted, and thou didst deliver them. (5) They cried unto thee, and were delivered: they trusted in thee, and were not confounded. (6) But I am a worm, and no man; a reproach of men, and despised of the people. (7) All they that see me laugh me to scorn: they shoot out the lip,
they shake the head, saying, (8) He trusted on the LORD that he would deliver him: let him deliver him, seeing he delighted in him.
Note the bold text. If you read the entire chapter of both, you would see that Psalm 22 tells the story of the crucifixion.
Christ certainly did experience great suffering, rejection and grief in His life. It was predicted that He would do so. But it does not mean that Christ is not, Himself, "the Word made flesh." As the incarnate Son, Christ utterly submitted Himself to the will of the Father. The fact of the matter is, Christ was fully man and fully God. He lived the perfect human life, yes, but He experienced all of our sufferings, all of our griefs, all of our temptations, conquering over them and yet, ultimately, being made a Curse for us on the cross, taking on the full weight of the wrath of God against sin.