It is holy, meaning whole: there is no corruption in it, no doctrine contradicts itself, all the witnesses agree with each other: if Jesus says something, Moses, or David, or Daniel, or one of the other Prophets, agree with what Jesus says, never contradicts it.

All statements in the Bible, are true statements; in that if it says that the Pharaoh said something, the Pharaoh actually said it, although the Pharaoh could have been lying, it is still a true record of the statement in terms of what was actually said.