1 John 1:6

If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth:

1 John 4:20

If a man sayeth, I love God, and hateth his brother, he is a liar. For he that loveth not his brother, whom he hath seen, how can he love God, whom he hath not seen?

1 John 1:10

If we say that we have not sinned, we make him a liar, and his word is not in us.

John 3:19-21

And this is the condemnation, that light is come into the world, and men have loved darkness rather than light, because their deeds were evil.

John 12:35

Then Jesus said to them, Yet a little while is the light with you. Walk while ye have the light, lest darkness come upon you: for he that walketh in darkness knoweth not whither he goeth.

1 John 2:4

He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.

Revelation 3:17-18

Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked:

Psalm 5:4-6

For thou art not a God that hath pleasure in wickedness: neither shall evil dwell with thee.

Psalm 82:5

They know not, neither will they understand; they walk on in darkness: all the foundations of the earth are out of course.

Psalm 94:20

Shall the throne of iniquity have fellowship with thee, which frameth mischief by a law?

Proverbs 2:13

Who leave the paths of uprightness, to walk in the ways of darkness;

Proverbs 4:18-19

But the path of the just is as the shining light, that shineth more and more to the perfect day.

Matthew 7:22

Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out demons? and in thy name done many wonderful works?

John 8:12

Then Jesus spoke again to them, saying, I am the light of the world: he that followeth me shall not walk in darkness, but shall have the light of life.

John 8:44-45

Ye are of your father the devil, and the lusts of your father ye will do: he was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.

John 11:10

But if a man walketh in the night, he stumbleth, because there is no light in him.

John 12:46

I am come a light into the world, that whoever believeth on me should not abide in darkness.

2 Corinthians 6:14-16

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

1 Timothy 4:2

Speaking lies in hypocrisy, having their conscience seared with a hot iron;

James 2:14

What doth it profit, my brethren, though a man sayeth he hath faith, and hath not works? can faith save him?

James 2:16

And one of you sayeth to them, Depart in peace, be you warmed and filled; notwithstanding ye give them not those things which are needful to the body; what doth it profit?

James 2:18

Also a man may say, Thou hast faith, and I have works: show me thy faith without thy works, and I will show thee my faith by my works.

1 John 1:3

That which we have seen and heard we declare to you, that ye also may have fellowship with us: and truly our fellowship is with the Father, and with his Son Jesus Christ.

1 John 1:8

If we say that we have no sin, we deceive ourselves, and the truth is not in us.

1 John 2:9-11

He that saith he is in the light, and hateth his brother, is in darkness even until now.

Treasury of Scripture Knowledge

Summary

If we say that we have fellowship with him, and walk in darkness, we lie, and do not the truth:

Do not

Bible References

If

1 John 1:8
If we say that we have no sin, we deceive ourselves, and the truth is not in us.
1 John 2:4
He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him.
1 John 4:20
If a man sayeth, I love God, and hateth his brother, he is a liar. For he that loveth not his brother, whom he hath seen, how can he love God, whom he hath not seen?
Matthew 7:22
Many will say to me in that day, Lord, Lord, have we not prophesied in thy name? and in thy name have cast out demons? and in thy name done many wonderful works?
James 2:14
What doth it profit, my brethren, though a man sayeth he hath faith, and hath not works? can faith save him?
Revelation 3:17
Because thou sayest, I am rich, and increased with goods, and have need of nothing; and knowest not that thou art wretched, and miserable, and poor, and blind, and naked:

Fellowship

1 John 1:3
That which we have seen and heard we declare to you, that ye also may have fellowship with us: and truly our fellowship is with the Father, and with his Son Jesus Christ.
Psalm 5:4
For thou art not a God that hath pleasure in wickedness: neither shall evil dwell with thee.
Psalm 94:20
Shall the throne of iniquity have fellowship with thee, which frameth mischief by a law?
2 Corinthians 6:14
Be ye not unequally yoked together with unbelievers: for what fellowship hath righteousness with unrighteousness? and what communion hath light with darkness?

We lie

1 John 1:10
If we say that we have not sinned, we make him a liar, and his word is not in us.
1 John 4:20
If a man sayeth, I love God, and hateth his brother, he is a liar. For he that loveth not his brother, whom he hath seen, how can he love God, whom he hath not seen?
John 8:44
Ye are of your father the devil, and the lusts of your father ye will do: he was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.
1 Timothy 4:2
Speaking lies in hypocrisy, having their conscience seared with a hot iron;

Do not

John 3:21
But he that doeth truth, cometh to the light, that his deeds may be made manifest, that they are wrought in God.