The Bible claims to be inspired of God:
"All Scripture is inspired of God and beneficial for teaching, for reproving, for setting things straight, for disciplining in righteousness." (2 Tim. 3:16)
The Bible also says that there is “one Lord, ONE FAITH, one baptism.” (Ephesians 4:4, 5)
Therefore, one needs to look for the one religion ("one faith") that follows the Bible the closest.
For more, see
Does it matter which religion you choose?