8 Bible Verses about Marriages, Believers With Unbelievers

Do not be unequally bound together with unbelievers [do not make mismatched alliances with them, inconsistent with your faith]. For what partnership can righteousness have with lawlessness? Or what fellowship can light have with darkness? What harmony can there be between Christ and Belial (Satan)? Or what does a believer have in common with an unbeliever? What agreement is there between the temple of God and idols? For we are the temple of the living God; just as God said:“I will dwell among them and walk among them;
And I will be their God, and they shall be My people.

Do two men walk together unless they have made an appointment?

Do not be deceived: “Bad company corrupts good morals.”

We know [for a fact] that we are of God, and the whole world [around us] lies in the power of the evil one [opposing God and His precepts].

Now it happened, when men began to multiply on the face of the land, and daughters were born to them, that the sons of God saw that the daughters of men were beautiful and desirable; and they took wives for themselves, whomever they chose and desired. Then the Lord said, “My Spirit shall not strive and remain with man forever, because he is indeed flesh [sinful, corrupt—given over to sensual appetites]; nevertheless his days shall yet be a hundred and twenty years.” read more.
There were Nephilim (men of stature, notorious men) on the earth in those days—and also afterward—when the sons of God lived with the daughters of men, and they gave birth to their children. These were the mighty men who were of old, men of renown (great reputation, fame).

Do you not know that your bodies are members of Christ? Am I therefore to take the members of Christ and make them part of a prostitute? Certainly not! Do you not know that the one who joins himself to a prostitute is one body with her? For He says, “The two shall be one flesh.” But the one who is united and joined to the Lord is one spirit with Him. read more.
Run away from sexual immorality [in any form, whether thought or behavior, whether visual or written]. Every other sin that a man commits is outside the body, but the one who is sexually immoral sins against his own body. Do you not know that your body is a temple of the Holy Spirit who is within you, whom you have [received as a gift] from God, and that you are not your own [property]? You were bought with a price [you were actually purchased with the precious blood of Jesus and made His own]. So then, honor and glorify God with your body.

So now, make confession to the Lord God of your fathers and do His will. Separate yourselves from the peoples of the land and from [your] foreign wives.”

“When the Lord your God brings you into the land which you are entering to possess, and has cleared away many nations before you, the Hittite and the Girgashite and the Amorite and the Canaanite and the Perizzite and the Hivite and the Jebusite, seven nations greater and mightier than you, and when the Lord your God gives them over to you and you defeat them, then you shall utterly destroy them. You shall not make a covenant (treaty) with them nor show mercy and compassion to them. You shall not intermarry with them; you shall not give your daughter to his son, nor shall you take his daughter for your son; read more.
for they will turn your sons away from following Me to serve other gods; then the anger of the Lord will be kindled and burn against you and He will quickly destroy you.