Joh 14:26 But the Comforter, [which is] the Holy Ghost, whom the Father will send in my name, he shall teach you all things, and bring all things to your remembrance, whatsoever I have said unto you.
Speaking of inerrancy, some make the assumption that what God intended was to teach us of salvation, and all the other details were chosen by the human authors and may be erroneous.
Jesus tells his disciples that the Father will send the Holy Ghost to:
- Teach them all things.
- Remind them of whatsoever he taught them
Furthermore, the scriptures warn us of prophets who teach lies:
Isa 9:15 The ancient and honourable, he [is] the head; and the prophet that teacheth lies, he [is] the tail.
A lie is a lie whether one knows that they are lying or not. Such is the potential harm of repeating gossip. So if the apostles taught things which are not true, knowingly or not, then they are false prophets. If the apostles were not sure that what they taught was true, they would have have preferred not to teach it.
The assumption then, also presupposes that the apostles were incompetent to determine truth from error, and places their whole testimony in jeopardy.
What indication is there that all and whatsoever should be interpreted as hyperbole such that we may assume that the apostles don't know what they are talking about?