'Unbeliever' in the Bible

and if all may prophecy, and any one may come in, an unbeliever or unlearned, he is convicted by all, he is discerned by all,

and what fellowship to light with darkness? and what concord to Christ with Belial? or what part to a believer with an unbeliever?

and if any one for his own -- and especially for those of the household -- doth not provide, the faith he hath denied, and than an unbeliever he is worse.