2 Corinthians 6:15 - And what concord hath Christ with Belial? or what part hath he that believeth with an infidel?1 Timothy 5:8 - But if any provide not for his own, and specially for those of his own house, he hath denied the faith, and is worse than an infidel. More modern translations use the word "unbeliever" instead of "infidel."