2 Corinthians 6:14-18
Do not be unequally yoked with unbelievers. For what partnership has righteousness with lawlessness? Or what fellowship has light with darkness? What accord has Christ with Belial? Or what portion does a believer share with an unbeliever?
What agreement has the temple of God with idols? For we are the temple of the living God; as God said, “I will make My dwelling among them and walk among them, and I will be their God, and they shall be My people. Therefore go out from their midst, and be separate from them, says the Lord, and touch no unclean thing; then I will welcome you, and I will be a father to you, and you shall be sons and daughters to Me, says the Lord Almighty.” (ESV)