Noah Webster's Dictionary 1. (n.) One who does not believe; an incredulous person; a doubter; a skeptic. 2. (n.) A disbeliever; especially, one who does not believe that the Bible is a divine revelation, and holds that Christ was neither a divine nor a supernatural person; an infidel; a freethinker. Int. Standard Bible Encyclopedia UNBELIEVER un-be-lev'-er: This word follows closely the lines of "unbelief" (which see) in its relation to originals. Once only (Acts 14:2) it represents the participle apeithountes, "disobeying (ones)." Elsewhere (nine cases) it represents apistos, "faithless," "without faith." In six of these passages (all in 1 and 2 Corinthians) it denotes the unconverted pagan as distinguished from the convert. In the other passages (Luke 12:46 Titus 1:15 Revelation 21:8) the reference is to the unbelief which comes of moral resistance to God.

Multi-Version Concordance Unbeliever (7 Occurrences) 1 Corinthians 7:12 To the rest it is I who speak--not the Lord. If a brother has a wife who is an unbeliever, and she consents to live with him, let him not send her away. (WEY NAS RSV) 1 Corinthians 7:13 and a woman who hath a husband unbelieving, and he is pleased to dwell with her, let her not send him away; (See RSV) 1 Corinthians 7:15 Yet if the unbeliever departs, let there be separation. The brother or the sister is not under bondage in such cases, but God has called us in peace. (WEB WEY DBY NIV) 1 Corinthians 10:27 If an unbeliever gives you an invitation and you are disposed to accept it, eat whatever is put before you, and ask no questions for conscience' sake. (WEY DBY NAS RSV NIV) 1 Corinthians 14:24 If, on the other hand, every one is prophesying and an unbeliever or an ungifted man comes in, he is convicted by all and closely examined by all, (WEY DBY YLT NAS RSV NIV) 2 Corinthians 6:15 What agreement has Christ with Belial? Or what portion has a believer with an unbeliever? (WEB WEY ASV DBY YLT NAS RSV NIV) 1 Timothy 5:8 But if anyone doesn't provide for his own, and especially his own household, he has denied the faith, and is worse than an unbeliever. (WEB WEY ASV DBY YLT NAS RSV NIV)