There is belief versus unbelief of one particular kind among humans which creates an important distinguishing barrier; like a cell wall. It separates insiders from outsiders; those in the know from those unable, in this particular case, to be in the know, who are therefore outside, in the outside world. It is about truly knowing the Holy Spirit. The belief required is of that particular kind which results in a person truly keeping Jesus Christ’s teachings. This Spirit is there in the earliest historic times of human civilisation, and still exactly the same today, searching the ins and outs of all of our natural world, and of the divine too. To really know this Spirit requires the kind of faith in Jesus which truly believes he is light from God, the faithful and approved Son, and as a result, goes on to afford to his teachings due adherence, permanently and persistently, with the assurance of spiritual understanding.