2 Corinthians 6:14

Do not be yoked together with unbelievers. For what partnership have righteousness and lawlessness? Or what fellowship has light with darkness?

1 Corinthians 15:33

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

Ephesians 5:6-14

Let no one deceive you with empty words, for because of these things the wrath of God comes upon the sons of disobedience.

John 15:18-19

"If the world hates you, know that it hated me before it hated you.

1 Corinthians 5:9

I wrote you in my letter not to associate with immoral people;

1 Corinthians 7:39

A wife is bound to her husband as long as he lives. But if her husband dies, she is free to be married to whom she wishes, only in the Lord.

1 Corinthians 10:21

You cannot drink the cup of the Lord and the cup of demons. You cannot partake of the table of the Lord and the table of demons.

James 4:4

You adulteresses, do you not know that friendship with the world is hostility toward God? Therefore whoever wishes to be a friend of the world makes himself an enemy of God.

1 Peter 2:9-10

But you are a chosen race, a royal priesthood, a holy nation, a people for God's own possession, that you may declare the praises of him who called you out of darkness into his marvelous light.

1 Peter 4:2-4

so as to live the rest of the time in the flesh no longer for human lusts, but for the will of God.

John 7:7

The world cannot hate you, but it hates me because I testify of it that its works are evil.

Acts 4:23

When they had been released, they went to their own companions and reported all that the chief priests and the elders had said to them.

Romans 13:12-14

The night is far gone, the day is at hand. Let us then cast off the works of darkness and put on the armor of light.

Ephesians 4:17-20

Now this I affirm and testify in the Lord, that you must no longer live as the Gentiles do, in the futility of their minds,

Philippians 2:15

so that you may be blameless and innocent, children of God without blemish in the midst of a crooked and perverse generation, among whom you shine as lights in the world,

1 Thessalonians 5:4-8

But you, brethren, are not in darkness so that this day should surprise you like a thief.

1 John 1:5-7

This is the message we have heard from him and declare to you, that God is light and in him is no darkness at all.

1 John 3:12-14

and not be like Cain who was of the evil one and murdered his brother. And why did he murder him? Because his own deeds were evil and his brother's righteous.

Treasury of Scripture Knowledge

Summary

Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?

Bible References

Unequally

1 Corinthians 5:9
I wrote you in my letter not to associate with immoral people;
1 Corinthians 7:39
A wife is bound to her husband as long as he lives. But if her husband dies, she is free to be married to whom she wishes, only in the Lord.
1 Corinthians 15:33
Do not be deceived: "Bad company corrupts good morals."
James 4:4
You adulteresses, do you not know that friendship with the world is hostility toward God? Therefore whoever wishes to be a friend of the world makes himself an enemy of God.

For

John 7:7
The world cannot hate you, but it hates me because I testify of it that its works are evil.
John 15:18
"If the world hates you, know that it hated me before it hated you.
Acts 4:23
When they had been released, they went to their own companions and reported all that the chief priests and the elders had said to them.
1 Corinthians 10:21
You cannot drink the cup of the Lord and the cup of demons. You cannot partake of the table of the Lord and the table of demons.
Ephesians 5:6
Let no one deceive you with empty words, for because of these things the wrath of God comes upon the sons of disobedience.
1 John 3:12
and not be like Cain who was of the evil one and murdered his brother. And why did he murder him? Because his own deeds were evil and his brother's righteous.

And what

Romans 13:12
The night is far gone, the day is at hand. Let us then cast off the works of darkness and put on the armor of light.
Ephesians 4:17
Now this I affirm and testify in the Lord, that you must no longer live as the Gentiles do, in the futility of their minds,
Ephesians 5:8
for once you were darkness, but now you are light in the Lord; walk as children of light
Philippians 2:15
so that you may be blameless and innocent, children of God without blemish in the midst of a crooked and perverse generation, among whom you shine as lights in the world,
1 Thessalonians 5:4
But you, brethren, are not in darkness so that this day should surprise you like a thief.
1 Peter 2:9
But you are a chosen race, a royal priesthood, a holy nation, a people for God's own possession, that you may declare the praises of him who called you out of darkness into his marvelous light.
1 Peter 4:2
so as to live the rest of the time in the flesh no longer for human lusts, but for the will of God.
1 John 1:5
This is the message we have heard from him and declare to you, that God is light and in him is no darkness at all.