Yes there is true can we rely on, though there is an ancient manuscripts called the Codex Sinaiticus according to Bro Eli. Overtime the bible have being modernised which is meant to be to suit a particular religion.
The bible is meant to tell us about the mind of God for each, the path to follow in order to enter into temptation. I don't know why a particular religion will misinterpret the word of God bearing false witnesses against God and His principles .
The changing of the translation is not caused by God is caused by those who are not ready to obey the commandment/ will of God. That why in Matthew 5 vs 18 made us understand that nothing should be removed or added to the word of God until it's fulfills the word of God. The word of God from the bible is meant to nourish our souls and bless us.