8 Bible Verses about Marriages, Believers With Unbelievers

Do not become partners with those who do not believe, for what partnership is there between righteousness and lawlessness, or what fellowship does light have with darkness? And what agreement does Christ have with Beliar? Or what does a believer share in common with an unbeliever? And what mutual agreement does the temple of God have with idols? For we are the temple of the living God, just as God said, "I will live in them and will walk among them, and I will be their God, and they will be my people."

Do two walk together without having met?

Do not be deceived: "Bad company corrupts good morals."

We know that we are from God, and the whole world lies in the power of the evil one.

When humankind began to multiply on the face of the earth, and daughters were born to them, the sons of God saw that the daughters of humankind were beautiful. Thus they took wives for themselves from any they chose. So the Lord said, "My spirit will not remain in humankind indefinitely, since they are mortal. They will remain for 120 more years."read more.
The Nephilim were on the earth in those days (and also after this) when the sons of God were having sexual relations with the daughters of humankind, who gave birth to their children. They were the mighty heroes of old, the famous men.

Do you not know that your bodies are members of Christ? Should I take the members of Christ and make them members of a prostitute? Never! Or do you not know that anyone who is united with a prostitute is one body with her? For it is said, "The two will become one flesh." But the one united with the Lord is one spirit with him.read more.
Flee sexual immorality! "Every sin a person commits is outside of the body" -- but the immoral person sins against his own body. Or do you not know that your body is the temple of the Holy Spirit who is in you, whom you have from God, and you are not your own? For you were bought at a price. Therefore glorify God with your body.

Now give praise to the Lord God of your fathers, and do his will. Separate yourselves from the local residents and from these foreign wives."

When the Lord your God brings you to the land that you are going to occupy and forces out many nations before you -- Hittites, Girgashites, Amorites, Canaanites, Perizzites, Hivites, and Jebusites, seven nations more numerous and powerful than you -- and he delivers them over to you and you attack them, you must utterly annihilate them. Make no treaty with them and show them no mercy! You must not intermarry with them. Do not give your daughters to their sons or take their daughters for your sons,read more.
for they will turn your sons away from me to worship other gods. Then the anger of the Lord will erupt against you and he will quickly destroy you.