Nehemiah 13:23-27 "In those days also saw I Jews that had married wives of Ashdod, of Ammon, and of Moab: And their children spoke half in the speech of Ashdod, and could not speak in the Jews' language, but according to the language of each people. And I contended with them, and cursed them, and smote certain of them, and plucked off their hair, and made them swear by God, saying, Ye shall not give your daughters unto their sons, nor take their daughters unto your sons, or for yourselves. Did not Solomon king of Israel sin by these things? yet among many nations was there no king like him, who was beloved of his God, and God made him king over all Israel: nevertheless even him did outlandish women cause to sin.
Shall we then hearken unto you to do all this great evil, to transgress against our God in marrying strange wives?"
The point here is that they married individuals that did not hold the same religious
1 Peter 3:4-7 "But let it be the hidden man of the heart, in that which is not corruptible, even the ornament of a meek and quiet spirit, which is in the sight of God of great price. For after this manner in the old time the holy women also, who trusted in God, adorned themselves, being in subjection unto their own husbands: Even as Sara obeyed Abraham, calling him lord: whose daughters ye are, as long as ye do well, and are not afraid with any amazement. Likewise, ye husbands, dwell with them according to knowledge, giving honor unto the wife, as unto the weaker vessel, and as being heirs together of the grace of life; that your prayers be not hindered."
Hebrews 13:4 "Marriage is honorable in all, and the bed undefiled: but whoremongers and adulterers God will judge."
1 Corinthians 7:1-16 "Now concerning the things whereof ye wrote unto me: It is good for a man not to touch a woman. Nevertheless, to avoid fornication, let every man have his own wife, and let every woman have her own husband. Let the husband render unto the wife due benevolence: and likewise also the wife unto the husband. The wife hath not power of her own body, but the husband: and likewise also the husband hath not power of his own body, but the wife. Defraud ye not one the other, except it be with consent for a time, that ye may give yourselves to fasting and prayer; and come together again, that Satan tempt you not for your incontinency. But I speak this by permission, and not of commandment. For I would that all men were even as I myself. But every man hath his proper gift of God, one after this manner, and another after that. 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. And unto the married I command, yet not I, but the Lord, Let not the wife depart from her husband: But and if she depart, let her remain unmarried, or be reconciled to her husband: and let not the husband put away his wife. 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 knows thou, O wife, whether thou shall save thy husband? or how knows thou, O man, whether thou shall save thy wife? "
2 Corinthians 6:14-16 "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;"
Ephesians 5:22-33 "Wives, submit yourselves unto your own husbands, as unto the Lord. For the husband is the head of the wife, even as Christ is the head of the church: and he is the savior of the body. Therefore as the church is subject unto Christ, so let the wives be to their own husbands in every thing. Husbands, love your wives, even as Christ also loved the church, and gave himself for it; That he might sanctify and cleanse it with the washing of water by the word, That he might present it to himself a glorious church, not having spot, or wrinkle, or any such thing; but that it should be holy and without blemish. So ought men to love their wives as their own bodies. He that loves his wife loves himself. For no man ever yet hated his own flesh; but nourishes and cherishes it, even as the Lord the church: For we are members of his body, of his flesh, and of his bones. For this cause shall a man leave his father and mother, and shall be joined unto his wife, and they two shall be one flesh. This is a great mystery: but I speak concerning Christ and the church. Nevertheless let every one of you in particular so love his wife even as himself; and the wife see that she reverence her husband."
Tobit 4:12-13 “Beware of all whoredom, my son, and chiefly take a wife of the seed of thy fathers, and take not a strange woman to wife, which is not of thy father’s tribe: for we are the children of the prophets, Noe, Abraham, Isaac, and Jacob: remember, my son, that our fathers from the beginning, even that they all married wives of their own kindred, and were blessed in their children, and their seed shall inherit the land. Now therefore, my son, love thy brethren, and despise not in thy heart thy brethren, the sons and daughters of thy people, in not taking a wife of them: for in pride is destruction and much trouble, and in lewdness is decay and great want: for lewdness is the mother of famine.”