2 Corinthians 6:14

Be not unsuitably connected with infidels: for what fellowship hath righteousness with unrighteousness? or what communion hath light with darkness?

1 Corinthians 15:33

Be not deceived, bad conversations corrupt good morals.

Ephesians 5:6-14

Let no one deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience.

John 15:18-19

If the world hate you, ye know that it hated me first.

1 Corinthians 5:9

I wrote to you in an epistle, not to associate with whoremongers:

1 Corinthians 7:39

The wife is bound by the law as long as her husband liveth: but if her husband be dead, she is at liberty to be married to whom she will, only in the Lord:

1 Corinthians 10:21

And I would not have you partakers with demons. Ye cannot drink of the cup of the Lord, and the cup of demons: ye cannot be partakers of the table of the Lord, and of the table of demons.

James 4:4

Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity to God? whosoever therefore will be a friend of the world becomes an enemy of God.

1 Peter 2:9-10

But ye are a chosen generation, a royal priesthood, a holy nation, a peculiar people; that ye should declare the glories of Him, who hath called you out of darkness into his marvellous light:

1 Peter 4:2-4

that he should no longer live the rest of his time in the flesh according to the lusts of men, but after the will of God.

John 7:7

but me it hates, because I bear my testimony concerning it, that it's deeds are evil.

Acts 4:23

Being dismissed they went to their own company, and reported all that the chief priests and elders had said to them.

Romans 13:12-14

The night is far spent, the day is at hand: let us therefore cast off the works of darkness, and let us put on the armour of light.

Ephesians 4:17-20

This I say therefore, and charge you in the name of the Lord, that ye no longer walk as the rest of the Gentiles walk,

Philippians 2:15

that ye may be blameless and inoffensive, the children of God without reproof, in the midst of a crooked and perverse generation; among whom ye shine as lights in the world,

1 Thessalonians 5:4-8

But ye, my brethren, are not in darkness, that that day should seize you as a thief:

1 John 1:5-7

Now this we have heard from Him, and declare unto you, that God is light, and in Him there is no darkness at all.

1 John 3:12-14

and why did he slay him? because his own works 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 to you in an epistle, not to associate with whoremongers:
1 Corinthians 7:39
The wife is bound by the law as long as her husband liveth: but if her husband be dead, she is at liberty to be married to whom she will, only in the Lord:
1 Corinthians 15:33
Be not deceived, bad conversations corrupt good morals.
James 4:4
Ye adulterers and adulteresses, know ye not that the friendship of the world is enmity to God? whosoever therefore will be a friend of the world becomes an enemy of God.

For

John 7:7
but me it hates, because I bear my testimony concerning it, that it's deeds are evil.
John 15:18
If the world hate you, ye know that it hated me first.
Acts 4:23
Being dismissed they went to their own company, and reported all that the chief priests and elders had said to them.
1 Corinthians 10:21
And I would not have you partakers with demons. Ye cannot drink of the cup of the Lord, and the cup of demons: ye cannot be partakers of the table of the Lord, and of the table of demons.
Ephesians 5:6
Let no one deceive you with vain words: for because of these things cometh the wrath of God upon the children of disobedience.
1 John 3:12
and why did he slay him? because his own works were evil, and his brother's righteous.

And what

Romans 13:12
The night is far spent, the day is at hand: let us therefore cast off the works of darkness, and let us put on the armour of light.
Ephesians 4:17
This I say therefore, and charge you in the name of the Lord, that ye no longer walk as the rest of the Gentiles walk,
Ephesians 5:8
For ye were heretofore darkness, but now ye are light in the Lord:
Philippians 2:15
that ye may be blameless and inoffensive, the children of God without reproof, in the midst of a crooked and perverse generation; among whom ye shine as lights in the world,
1 Thessalonians 5:4
But ye, my brethren, are not in darkness, that that day should seize you as a thief:
1 Peter 2:9
But ye are a chosen generation, a royal priesthood, a holy nation, a peculiar people; that ye should declare the glories of Him, who hath called you out of darkness into his marvellous light:
1 Peter 4:2
that he should no longer live the rest of his time in the flesh according to the lusts of men, but after the will of God.
1 John 1:5
Now this we have heard from Him, and declare unto you, that God is light, and in Him there is no darkness at all.