1 John 1:6

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

1 John 4:20

If any one say, Indeed I love God, and yet hate his brother, he is a liar: for he who loves not his brother, whom he has seen, how can he love God, whom he has 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.

1 John 2:4

He who says, I have known him, and does not keep his commandments, is a liar, and the truth is not in this man.

Revelation 3:17-18

Because you say, I am wealthy, and have enriched myself, and have need of nothing; and do not know that you are wretched and miserable, and poor, and blind, and naked.

1 John 1:3

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

1 John 1:8

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

1 John 2:9-11

He who says he is in the light and yet hates his brother, is in the darkness till 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:

Fellowship

Bible References

If

1 John 1:8
If we say we have no sin, we deceive ourselves, and the truth is not in us.
1 John 2:4
He who says, I have known him, and does not keep his commandments, is a liar, and the truth is not in this man.
1 John 4:20
If any one say, Indeed I love God, and yet hate his brother, he is a liar: for he who loves not his brother, whom he has seen, how can he love God, whom he has not seen?
Revelation 3:17
Because you say, I am wealthy, and have enriched myself, and have need of nothing; and do not know that you are 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 you also may have fellowship with us: and our fellowship truly is with the Father, and with his Son, Jesus Christ.

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 any one say, Indeed I love God, and yet hate his brother, he is a liar: for he who loves not his brother, whom he has seen, how can he love God, whom he has not seen?