8 Bible Verses about Marriages, Believers With Unbelievers

Do not become unequally yoked with unbelievers, for what partnership has righteousness and lawlessness? And what fellowship has light with darkness? And what agreement has Christ with Belial? Or what share have believers with non-believers? And what mutual agreement has a temple of God with idols? For ye are a temple of the living God, just as God said, I will dwell in them, and will walk among them. And I will be their God, and they will be a people to me.

Shall two walk together unless they have agreed?

Be not led astray. Evil associations corrupt good habits.

We know that we are of God, and the whole world is set in the evil.

And it came to pass, when men began to multiply on the face of the ground, and daughters were born to them, that the sons of God saw the daughters of men that they were fair. And they took to them wives of all that they chose. And LORD said, My spirit shall not strive with man forever, for he also is flesh. Yet shall his days be a hundred and twenty years.read more.
The Nephilim were on the earth in those days. And also after that, when the sons of God came to the daughters of men, and they bore sons to them, the same were the mighty men who were of old, the men of renown.

Know ye not that your bodies are body-parts of Christ? Therefore, having taken the body-parts of the Christ, should I make them body-parts of a harlot? May it not happen! Or know ye not that he who is joined to a harlot is one body? For, The two, he says, will be in one flesh. But he who is joined to the Lord is one spirit.read more.
Flee fornication. Every sin, whatever a man may do, is outside the body, but he who fornicates sins against his own body. Or know ye not that your body is a temple of the Holy Spirit in you, which ye have from God? And ye are not your own, for ye were bought with a price. Therefore glorify God in your body and your spirit, which is of God.

Now therefore make confession to LORD, the God of your fathers, and do his pleasure, and separate yourselves from the peoples of the land, and from the foreign women.

When LORD thy God shall bring thee into the land where thou go to possess it, and shall cast out many nations before thee, the Hittite, and the Girgashite, and the Amorite, and the Canaanite, and the Perizzite, and the Hivite, and and when LORD thy God shall deliver them up before thee, and thou shall smite them, then thou shall utterly destroy them. Thou shall make no covenant with them, nor show mercy to them. Neither shall thou make marriages with them. Thy daughter thou shall not give to his son, nor his daughter shall thou take to thy son.read more.
For he will turn away thy son from following me, that they may serve other gods, so the anger of LORD will be kindled against you, and he will destroy thee quickly.