Twelve New Testament Books mention Abraham.
No; but there are books that mention him.
In the NIV translation as word search on the word "sin" turns up 433 hits.
I'm pretty sure that all of them mention suffering.
4
The Bible does not explicitly state that no sin is greater than another. However, it does mention that all sins separate us from God and that the consequences of sin are the same, regardless of the type of sin committed.
Surprisingly, the book of Esther does not mention the name of God at all.
Romans
Mathew
The books and the movies, both, don't mention it.
Yes
The Bible does not mention Jesus' date of birth or the celebration of it, therefore it does not mention "Christmas", anywhere.