The Bible is correct because God ordained that God’s Church would and did accept it. There may be minor variations in different translations, but I’ve never come across anything earth shattering. The essence is still there in most major translations. But if you are talking about such things as the Mormon Bible, then it is wrong because God’s Church did not accept it.
What are the standards that you use to judge the Bible by?
There should be serious scholarship behind it conducted by people I have reason to trust. For example, the preface to my NIV says that it was put together by "over 100 scholars working directly from the best available Hebrew, Aramaic and Greek texts". Later it says: "The fact that participants from the United States, Great Britain, Canada, Australia and New Zealand worked together gave the project its international scope. That they were from many denominations - including Anglican, Assemblies of God, Baptist, Brethren, Christian Reformed, Church of Christ, Evangelical Free, Lutheran, Mennonite, Methodist, Nazarene, Presbyterian, Wesleyan and other churches - helped to safeguard the translation from sectarian bias". That sounds pretty good to me. :)