The Bible was written over a period of about 1,600 years, by 40, God chosen, men, who lived on 3 separate continents and they all wrote about the same thing, the Gospel of Christ. There were no mail delivery trucks, no drop ship planes, no Federal Express, no UPS and no email, yet when all of the writings were put together they present one unified message. The Bible is truly the Word of God.
If the Bible is true, Christianity is true. Following are some topics and links I hope you will look into, concerning the validity of the Bible.
An excellent ebook on the subject: http://www.apologeticspress.org/pdfs/e-books_pdf/idobi.pdf
Proof of Textual Evidence
Old Testament: http://www.apologeticspress.org/articles/266
New Testament: http://www.carm.org/questions/textualevidence.htm
More on the Bible: http://www.carm.org/bible.htm, http://www.carm.org/questions_bible.htm
Proof of People Living at the Time of Christ
Proof of Archaeology
Proof of Science
Statements Consistent With Paleontology
Statements Consistent With Astronomy
Statements Consistent With Meteorology
Statements Consistent With Biology
Statements Consistent With Anthropology
Statements Consistent With Hydrology
Statements Consistent With Geology
Proof of Prophecy (Messanic & dealing with nations)
http://www.sotl.org/public/proofs.htm (about Israel-incredible)
http://www.prophecyrevealed.com/index.html (awesome book)
If the Bible is true, Christianity is true. In Christianity, faith is required but it does not have to be a blind faith.
I hope this info is helpful.