Just because it's called the Book of Enoch doesn't mean it's written by him. It's considered one of Pseudopigraphical book, literally "false attribution" (See: Pseudepigrapha (Wikipedia).
The subsequent description was taken from the IVP Dictionary of New Testament Background, Entry: Enoch, Books Of.
1 Enoch consists of 5 distinct compositions:
Book of ...
I will let the Scriptures speak for themselves:
As it is written, There is none righteous, no, not one: There is none that understandeth, there is none that seeketh after God. They are all gone out of the way, they are together become unprofitable; there is none that doeth good, no, not one... For all have sinned, and come short of the glory of God.. ...
C Rags answer is the best one so far because it is based on Scripture (Unfortunately as of now I can't comment neither vote up on his answer).
If I am to give another answer, I would also use the Scripture beginning in Romans 5:12-14 (KJV):
12 Wherefore, as by one man sin entered into the world, and death by
sin; and so death passed upon all men, for ...
What was the language that Enoch spoke and did the Book of Enoch get written 3000 years BC and is there any proof or carbon dating of that?
Let us start with what language Enoch possible spoke.
There is no firm proof of what language Enoch actually spoke. But several hypotheses do exist.
One possible hypothesis comes from what else Wikipedia:
As far as the Bible is concerned about the Nephilim, it seems quite clear that they are annihilated in the Flood, but somehow they survive. The Flood story starts in Genesis six and seems to indicate that the Nephilim were a major reason for sending it.
The Nephilim were on the earth in those days—and also afterward—when the sons of God went to the ...
Interesting question indeed ! I made some researches on wol.jw.org, and came accross this reference : http://wol.jw.org/en/wol/d/r1/lp-e/2010649
Here is the summary :
Although this is often asked as a trick question by Bible skeptics,
the Bible does provide sufficient detail to give a satisfactory
Genesis chapters 3 and 4 present the ...
Was Noah and/or his family fully or partially descendant from Cain?
Yes it seems possible, perhaps not provable, but how could anyone say for sure? Genesis - it simply does not give the ancestry for any of the women. Of course the idea that Cain is responsible for sin and evil being in humanity is just patently false. That would truly have been Adam and Eve!
Were all Nephilim evil?
Impossible to say, but I doubt it.
Let us start by seeing who the Nephilim of the Scripture may truly be:
The Nephilim (Hebrew: נְפִילִים) were the offspring of the "sons of God" and the "daughters of men" before the Deluge, according to Genesis 6:1-4.
A similar or identical biblical Hebrew term, read as "Nephilim" by some ...
Enoch was the great-great-great-great-grandson of Adam and lived more than 4,000 years ago.
After he became the father of Methuselah, Enoch walked faithfully with God 300 years and had other sons and daughters. Altogether, Enoch lived a total of 365 years. Enoch walked faithfully with God; then he was no more, because God took him away (Genesis 5:22-24).