Here are 54 Bible verses about dating an unbeliever from the Old and New Testaments of the Holy Bible (King James Version), sorted from most to least relevant.
1 Corinthians 15:33 KJV
Be not deceived: evil communications corrupt good manners.
2 Corinthians 6:14 KJV
Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?
2 Corinthians 6:14-16 KJV
Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? And what concord hath Christ with Belial? or what part hath he that believeth with an infidel? And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people.
2 Timothy 2:22 KJV
Flee also youthful lusts: but follow righteousness, faith, charity, peace, with them that call on the Lord out of a pure heart.
Deuteronomy 7:3-4 KJV
Neither shalt thou make marriages with them; thy daughter thou shalt not give unto his son, nor his daughter shalt thou take unto thy son. For they will turn away thy son from following me, that they may serve other gods: so will the anger of the LORD be kindled against you, and destroy thee suddenly.
1 Corinthians 10:13 KJV
There hath no temptation taken you but such as is common to man: but God is faithful, who will not suffer you to be tempted above that ye are able; but will with the temptation also make a way to escape, that ye may be able to bear it.
Amos 3:3 KJV
Can two walk together, except they be agreed?
2 Corinthians 6:14-15 KJV
Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? And what concord hath Christ with Belial? or what part hath he that believeth with an infidel?
1 Corinthians 7:39 KJV
The wife is bound by the law as long as her husband liveth; but if her husband be dead, she is at liberty to be married to whom she will; only in the Lord.
1 Corinthians 6:18 KJV
Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body.
2 Corinthians 6:15 KJV
And what concord hath Christ with Belial? or what part hath he that believeth with an infidel?
1 Thessalonians 4:3-5 KJV
For this is the will of God, even your sanctification, that ye should abstain from fornication: That every one of you should know how to possess his vessel in sanctification and honour; Not in the lust of concupiscence, even as the Gentiles which know not God:
Proverbs 4:23 KJV
Keep thy heart with all diligence; for out of it are the issues of life.
John 3:16 KJV
For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life.
Ephesians 5:3 KJV
But fornication, and all uncleanness, or covetousness, let it not be once named among you, as becometh saints;
James 4:4 KJV
Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity with God? whosoever therefore will be a friend of the world is the enemy of God.
2 Corinthians 6:14-18 KJV
Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness? And what concord hath Christ with Belial? or what part hath he that believeth with an infidel? And what agreement hath the temple of God with idols? for ye are the temple of the living God; as God hath said, I will dwell in them, and walk in them; and I will be their God, and they shall be my people. Wherefore come out from among them, and be ye separate, saith the Lord, and touch not the unclean thing; and I will receive you, And will be a Father unto you, and ye shall be my sons and daughters, saith the Lord Almighty.
1 Corinthians 7:12-16 KJV
But to the rest speak I, not the Lord: If any brother hath a wife that believeth not, and she be pleased to dwell with him, let him not put her away. And the woman which hath an husband that believeth not, and if he be pleased to dwell with her, let her not leave him. For the unbelieving husband is sanctified by the wife, and the unbelieving wife is sanctified by the husband: else were your children unclean; but now are they holy. But if the unbelieving depart, let him depart. A brother or a sister is not under bondage in such cases: but God hath called us to peace. For what knowest thou, O wife, whether thou shalt save thy husband? or how knowest thou, O man, whether thou shalt save thy wife?
Luke 1:37 KJV
For with God nothing shall be impossible.
1 Corinthians 13:4-7 KJV
Charity suffereth long, and is kind; charity envieth not; charity vaunteth not itself, is not puffed up, Doth not behave itself unseemly, seeketh not her own, is not easily provoked, thinketh no evil; Rejoiceth not in iniquity, but rejoiceth in the truth; Beareth all things, believeth all things, hopeth all things, endureth all things.
Matthew 6:33 KJV
But seek ye first the kingdom of God, and his righteousness; and all these things shall be added unto you.
Ezra 9:12 KJV
Now therefore give not your daughters unto their sons, neither take their daughters unto your sons, nor seek their peace or their wealth for ever: that ye may be strong, and eat the good of the land, and leave it for an inheritance to your children for ever.
1 Kings 11:4 KJV
For it came to pass, when Solomon was old, that his wives turned away his heart after other gods: and his heart was not perfect with the LORD his God, as was the heart of David his father.
Deuteronomy 7:3 KJV
Neither shalt thou make marriages with them; thy daughter thou shalt not give unto his son, nor his daughter shalt thou take unto thy son.
1 John 4:8 KJV
He that loveth not knoweth not God; for God is love.
1 Corinthians 10:31 KJV
Whether therefore ye eat, or drink, or whatsoever ye do, do all to the glory of God.
1 Corinthians 6:18-19 KJV
Flee fornication. Every sin that a man doeth is without the body; but he that committeth fornication sinneth against his own body. What? know ye not that your body is the temple of the Holy Ghost which is in you, which ye have of God, and ye are not your own?
1 Corinthians 5:11 KJV
But now I have written unto you not to keep company, if any man that is called a brother be a fornicator, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner; with such an one no not to eat.
Romans 12:2 KJV
And be not conformed to this world: but be ye transformed by the renewing of your mind, that ye may prove what is that good, and acceptable, and perfect, will of God.
Genesis 2:24 KJV
Therefore shall a man leave his father and his mother, and shall cleave unto his wife: and they shall be one flesh.
Revelation 21:8 KJV
But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone: which is the second death.
2 Corinthians 5:17 KJV
Therefore if any man be in Christ, he is a new creature: old things are passed away; behold, all things are become new.
Romans 13:14 KJV
But put ye on the Lord Jesus Christ, and make not provision for the flesh, to fulfil the lusts thereof.
Proverbs 27:17 KJV
Iron sharpeneth iron; so a man sharpeneth the countenance of his friend.
Proverbs 19:14 KJV
House and riches are the inheritance of fathers and a prudent wife is from the LORD.
Philippians 4:13 KJV
I can do all things through Christ which strengtheneth me.
1 Corinthians 6:13 KJV
Meats for the belly, and the belly for meats: but God shall destroy both it and them. Now the body is not for fornication, but for the Lord; and the Lord for the body.
Romans 14:23 KJV
And he that doubteth is damned if he eat, because he eateth not of faith: for whatsoever is not of faith is sin.
John 14:6 KJV
Jesus saith unto him, I am the way, the truth, and the life: no man cometh unto the Father, but by me.
John 10:10 KJV
The thief cometh not, but for to steal, and to kill, and to destroy: I am come that they might have life, and that they might have it more abundantly.
Mark 3:25 KJV
And if a house be divided against itself, that house cannot stand.
Matthew 22:39 KJV
And the second is like unto it, Thou shalt love thy neighbour as thyself.
Matthew 19:5 KJV
And said, For this cause shall a man leave father and mother, and shall cleave to his wife: and they twain shall be one flesh?
Matthew 10:37 KJV
He that loveth father or mother more than me is not worthy of me: and he that loveth son or daughter more than me is not worthy of me.
Matthew 6:24 KJV
No man can serve two masters: for either he will hate the one, and love the other; or else he will hold to the one, and despise the other. Ye cannot serve God and mammon.
Matthew 5:28 KJV
But I say unto you, That whosoever looketh on a woman to lust after her hath committed adultery with her already in his heart.
Matthew 5:16 KJV
Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven.
Proverbs 31:30 KJV
Favour is deceitful, and beauty is vain: but a woman that feareth the LORD, she shall be praised.
Proverbs 13:20 KJV
He that walketh with wise men shall be wise: but a companion of fools shall be destroyed.
Proverbs 12:15 KJV
The way of a fool is right in his own eyes: but he that hearkeneth unto counsel is wise.
Proverbs 3:5 KJV
Trust in the LORD with all thine heart; and lean not unto thine own understanding.
Genesis 2:18 KJV
And the LORD God said, It is not good that the man should be alone; I will make him an help meet for him.
Ephesians 5:19 KJV
Speaking to yourselves in psalms and hymns and spiritual songs, singing and making melody in your heart to the Lord;
1 Corinthians 7:8-9 KJV
I say therefore to the unmarried and widows, It is good for them if they abide even as I. But if they cannot contain, let them marry: for it is better to marry than to burn.