1 Corinthians 5:10

and not at all with the fornicators of this world, or with greedy men, or with predators, or with idolaters, since then ye would need to go out of the world.

1 Corinthians 10:27

If any of those unbelievers invites you, and ye want to go, eat everything being set before you, inquiring of nothing because of the conscience.

Matthew 5:14-16

Ye are the light of the world. A city setting on a hill cannot be hid,

John 8:23

And he said to them, Ye are from below, I am from above. Ye are of this world, I am not of this world.

John 15:19

If ye were of the world, the world would love its own, but because ye are not of the world (instead I chose you out of the world), because of this the world hates you.

John 17:6

I manifested thy name to the men whom thou gave me out of the world. They were thine, and thou gave them to me, and they have kept thy word.

John 17:9

I pray about them. I do not pray about the world, but about whom thou have given me, because they are for thee.

John 17:15-16

I pray not that thou should take them out of the world, but that thou should keep them from the evil.

1 Corinthians 1:20

Where is a wise man? Where is a scholar? Where is a researcher of this age? Did not God make foolish the wisdom of this world?

2 Corinthians 4:4

in whom the god of this age has blinded the minds of the unbelieving, in order for the light of the good-news of the glory of the Christ (who is a likeness of God) not to shine forth to them.

Ephesians 2:2

in which ye once walked according to the era of this world, according to the ruler of the power of the air, the spirit that now works in the sons of disobedience.

Philippians 2:15

so that ye may become blameless and pure children of God, blameless in the midst of a crooked and perverted generation, among whom ye shine as lights in the world.

1 John 4:5

They are of the world. Because of this they speak of the world, and the world hears them.

1 John 4:7

Beloved, we should love each other. Because love is of God, and every man who loves has been begotten of God, and knows God.

1 John 5:19

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

Revelation 12:9

And the great dragon was cast out, the ancient serpent, called the Devil and Satan, he who leads the whole world astray. He was cast out to the earth, and his agents were cast out with him.

Treasury of Scripture Knowledge

Summary

Yet not altogether with the fornicators of this world, or with the covetous, or extortioners, or with idolaters; for then must ye needs go out of the world.

Altogether

General references

Bible References

Altogether

1 Corinthians 10:27
If any of those unbelievers invites you, and ye want to go, eat everything being set before you, inquiring of nothing because of the conscience.

Of this

1 Corinthians 1:20
Where is a wise man? Where is a scholar? Where is a researcher of this age? Did not God make foolish the wisdom of this world?
John 8:23
And he said to them, Ye are from below, I am from above. Ye are of this world, I am not of this world.
John 15:19
If ye were of the world, the world would love its own, but because ye are not of the world (instead I chose you out of the world), because of this the world hates you.
John 17:6
I manifested thy name to the men whom thou gave me out of the world. They were thine, and thou gave them to me, and they have kept thy word.
2 Corinthians 4:4
in whom the god of this age has blinded the minds of the unbelieving, in order for the light of the good-news of the glory of the Christ (who is a likeness of God) not to shine forth to them.
Ephesians 2:2
in which ye once walked according to the era of this world, according to the ruler of the power of the air, the spirit that now works in the sons of disobedience.
1 John 4:5
They are of the world. Because of this they speak of the world, and the world hears them.

For

Matthew 5:14
Ye are the light of the world. A city setting on a hill cannot be hid,
John 17:15
I pray not that thou should take them out of the world, but that thou should keep them from the evil.
Philippians 2:15
so that ye may become blameless and pure children of God, blameless in the midst of a crooked and perverted generation, among whom ye shine as lights in the world.
1 John 5:19
We know that we are of God, and the whole world is set in the evil.
Revelation 12:9
And the great dragon was cast out, the ancient serpent, called the Devil and Satan, he who leads the whole world astray. He was cast out to the earth, and his agents were cast out with him.

General references

Luke 15:2
And the Pharisees and the scholars murmured, saying, This man receives sinners and eats with them.