The presentation probes and estimates the probable cognitive complexity that must have arisen in the minds of the prophets and the apostles in their experiences of receiving and responding to revelation as well as reducing it to writing. The heightened use of cognitive capabilities for perception, belief and language as well as the cognitive concerns such as grasping reality, propelling relationality and caring for rationality are shown as being evident among those who claimed to have received revelation. The unique responses such as reverential fear and emphasising the moral imperatives found only in Christian Scripture reinforce the truthfulness and sensibility that ought to underly any true revelation.