Codeblue:
After finally realizing that Constantine (pagan) decided what books were to be put in the Bible, I wondered which ones are missing? and WHY would a pagan guy be allowed to decide which books a Christian should read? It to me totally throws off the authenticity of the Bible.
Leolaia is correct. In addition, Constantine was not a pagan at the time of the council of Nicaea in 325. He had already converted to Christianity for 12 or 13 years. He held a prominant postion, but it was the Bishops that really counted.
As I noted above in previous comments, the compilation of the Bible did not begin until the late 4th century, long after Constantine's death. It was Pope Damasus who requested St. Jerome to engage in the project. The result was the latin Vulgate. Through the centuries, some books would be in the NT and then some books would be removed. There is still debate over such books as Revelation. For years, Hebrews and the Espitles of 1st and 2nd Peter and others were strongly disputed by the Catholic church, but finally made it into the Bible canon. The NT Bible was developed by the Catholic Church and was not considered inspired until the 7th or 8th century.
Jim Whitney