There is only one True Bible. That is the original Bible which God inspired the holy prophets of old to write. The manuscripts of those Bibles are with us. That is the one true Bible which we must obey. The Bible teaches the Word of God. The Word of God are the utterances from God. These are the Word by which we must live.
The Bible carries the doctrines of Jesus Christ who is our Savior. Jesus Christ is our redeemer. He redeemed us from every sin. He delivered us from the grip of darkness. He is our light. The Bible teaches us His words and his ways. When we follow Jesus through the Bible we will be true disciples.
As believers, we must be watchful so that we would not be carried away by false doctrines. There are false doctrines. These are the doctrines of demons. The Bible is the basis of our faith and we should hold on to that. There is no other book of doctrines valid among the christians which we must follow. So, let our hearts be fixed on the word of God as given to us in the Bible.