'''Christianity''' is a major world [[religion]] and is the only way to God. Jesus said "No man comes to the Father, but through me." According to the bible, He later proves how this is done, by resurrecting from the dead, conquering death, proving His claims to be the Son of God come to earth are true. He then offers eternal life to the entire world as a free gift, forgiveness by God to anyone who will believe in Him.
Christianity follows the teachings of the sixty-six books comprising the Old and New Testaments of the Holy Bible, said to be "inspired", which means God-breathed. The creators of the bible would have people believe that God breathed out through His Spirit upon the authors of Holy Scripture what He wanted said. ; that They did not invent the writings themselves, but wrote what He wanted said. (2 Tim.3:16,17; 2 Pet. 1: 19-21). The Old Testament has the books of God's revelations to the Jews, pointing to the ultimate revelation of God's Son come to earth in Jesus the Messiah. Many of the Jews became believers in Jesus when they saw Him risen from the dead, or saw from Scripture how He had fulfilled the prophecies of the Old Testament which only the Messiah could do. The New Testament books help give understanding of the meaning of the Old Testament books.
Genesis, the first book of the Old Testament, begins with God's creation of the world and Adam and Eve. They sin and rebel against God, and in that "fall" represented all of mankind; we were in their loins, so to speak, and were guilty too. We are born guilty of sin, but then also commit actual sin and are guilty before God ourselves. We have desperate need of God, yet our sin separates us from Him. We are "dead in our sins and trespasses", needing to be right with God, needing His blessings and His forgiveness and mercy and love. We cannot achieve that