Light And darkness Cannot Mix
Be not yolk unequally with unbelievers because you are children of light.
Do not be unequally yoked together with unbelievers. For what fellowship has righteousness with lawlessness?
And what communion has light with darkness? And what accord has Christ with Belial? Or what part has a believer with an unbeliever? (2 Corinthians 6:14-15)