However, the proof that your bible got corrupted can be shown by material evidences. In fact, we don’t need any manuscript to prove that. Just look to the stories from Mark to John, and how they got developed. You cannot deny that, Ken.
Then who said that NT is the words of God? Jesus? His disciples? None! It was not known for them. In fact, you can see the errors inside them as any book written by human such as( Mtthew27:9).
Regarding Matthew 27:9, it was not a mistake, as the quote includes words from both Jeremiah 19:1-13; Jeremiah 18:2 and Jeremiah 32:6-9 and Zechariah 11:12-13.
“The whole point of the quotation in Matthew is directed toward the purchase of the field. The Zechariah passage says nothing at all about purchasing a field; indeed, it does not even mention a field at all.” (Gleason Archer, Encyclopedia of Bible Difficulties, page 345.) see the emphasis on the field in Matthew 27:7-8, which gives the context of verse 9.
“Matthew is therefore combining and summarizing elements of prophetic symbolism both from Zechariah and Jeremiah. But since Jeremiah is the more prominent of the two prophets, he mentions Jeremiah’s name by preference to that of the minor prophet.” (ibid, page 345)
“A similar procedure is followed by Mark 1:2-3, which attributes only to Isaiah, a combined combination from Malachi 3:1 and Isaiah 40:3. In that case also, only the more famous of the two prophets is mentioned by name.” (Ibid) A similar Jewish practice is seen in Luke 24:44, where the “Psalms” stands for all the poetic and wisdom literature (the Ketovim = writings). Psalms is the largest and more prominent book of the Ketovim section of the Jewish TaNakh canon.
So, there is no corruption from that example you gave.
Development from Mark to John:
Development from Mark to John does not prove no evidence of Deity of Christ in Mark at all, and all and only in John; rather there is plenty of evidence of the Deity of Christ in Mark also even though John is more explicit.
(Mark 1:3 – “make straight way of Yahweh” – shows he was treating Jesus as Yahweh; Mark 1:11; 14:60-64 – Jesus as the Son of God by nature, means He is the same nature/substance/essence as the Father, who is also God; demons call Jesus the Son of God many times in Mark, and Islam believes in demons, only modern skeptics, the modern scholars Paul Williams loves so much, deny the existence of demons. (Mark 1:23-24; 3:11; 5:7)
In the debate between Ehrman and Michael Bird, Bart Ehrman claimed that no one knew Jesus was the Son of God in Mark, yet Michael Bird responded that Mark certainly made it clear several times that the demons knew Jesus was the Son of God! Amazing that Bart Erhman totally ignored those clear passages.
God the Father from heaven calls Jesus His beloved Son. (Mark 1:11; 9:7)
Jesus is Lord of the Sabbath (Mark 2:28), a claim to be the Yahweh of Genesis 1-2 and creator of the Sabbath day of rest, and creator of all that came before in creation.
Mark 2:7 – Jesus claims to be God indirectly by being able to forgive sins.