Were the apostles infallible? Difference between inspiration and infallibility. 

it is often claimed, in the context of apologetic arguments, that we must concede and accept that at least the apostles possessed infallible authority. The reason for this assumption is because the prophets spoke, and wrote, the infallible word of God. But speaking the infallible word of God does not require the human agent themselves to be infallible: it merely requires that they cooperate with the grace of inspiration.