The Council of Nicea did not decide what was or wasn't scripture. That's a myth. Other than the book of Revelation, it was generally agreed what was and wasn't scripture by the end of the 1st century. These missing books that some ITT have lamented being taken from scripture are not some mysterious word from God that the Catholic church or someone else hid from us. They were removed because the failed the most basic test of scripture, they contradict the rest of scripture. Most famously, the book of Enoch, for all it's interesting topics, would never have been considered scripture, because in numerous places it differs from both the Old & New Testaments.
The Bible is inspired by the Holy Spirit. It's the word of God. "For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost.” The man who wrote the article you reference is a heretic, or more likely an apostate. Peter said the above about the bible, yet this man, whoever he is, says it's "men’s words about God", an absurdity. The words of the bible themselves don't give us that option: either the bible is the word of God, or it's man-made foolishness.
The Bible has authenticated itself over the last 2000-4000 or so years. God didn't give men a vision of what to do, what to tell Israel, or what was coming in the future, then leave it up to men to write it down appropriately (or not). He led them in the writing (a fact verified many places in scripture; for example, when Christ prayed in the Garden while his disciples slept, the only one who could have known what happened the entire time was Jesus himself).
The Bible is sacred and inerrant. Numerous times Christ's actions were described as being done "that the scripture might be fulfilled". That alone destroys the notion that these are "men's words". It was given by inspiration, so it doesn't contradict the fact that Jesus is the "word", it verifies that it's one with him. Perhaps the strongest word on the issue of the source of scripture came from the words of Jesus himself. He said "the scripture cannot be broken", "scripture" being translated from the Greek word for "document".