1 John 2:9

He that saith how that he is in the light, and yet hateth his brother, is in darkness even until this time.

1 John 2:11

And he that hateth his brother is in darkness, and walketh in darkness; and knoweth not whither he goeth, for darkness hath blinded his eyes.

1 John 4:20

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

Psalm 82:5

They will not be learned nor understand, but walk on still in darkness; all the foundations of the earth are out of course.

John 9:41

Jesus said unto them, "If ye were blind, ye should have no sin: but now ye say, 'We see.' Therefore your sin remaineth."

Romans 2:18-21

and knowest his will, and hast experience of good and bad, in that thou art informed by the law:

1 Corinthians 13:1-3

Though I spake with the tongues of men and angels, and yet had no love, I were even as sounding brass: or as a tinkling cymbal.

2 Peter 1:9

But he that lacketh these things is blind and gropeth for the way with his hand, and hath forgotten that he was purged from his old sins.

1 John 1:6

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

1 John 2:4

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

1 John 3:13-17

Marvel not, my brethren, though the world hate you.

Treasury of Scripture Knowledge

Summary

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

That saith

And hateth

General references

Bible References

That saith

1 John 2:4
He that saith, "I know him," and yet keepeth not his commandments, is a liar, and the verity is not in him.

He is

1 John 1:6
If we say that we have fellowship with him, and yet walk in darkness, we lie, and do not the truth:
John 9:41
Jesus said unto them, "If ye were blind, ye should have no sin: but now ye say, 'We see.' Therefore your sin remaineth."
Romans 2:18
and knowest his will, and hast experience of good and bad, in that thou art informed by the law:

And hateth

1 John 3:13
Marvel not, my brethren, though the world hate you.

Is in

1 John 2:11
And he that hateth his brother is in darkness, and walketh in darkness; and knoweth not whither he goeth, for darkness hath blinded his eyes.
Psalm 82:5
They will not be learned nor understand, but walk on still in darkness; all the foundations of the earth are out of course.
1 Corinthians 13:1
Though I spake with the tongues of men and angels, and yet had no love, I were even as sounding brass: or as a tinkling cymbal.
2 Peter 1:9
But he that lacketh these things is blind and gropeth for the way with his hand, and hath forgotten that he was purged from his old sins.

General references

John 15:12
This is my commandment: that ye love together as I have loved you.
Hebrews 13:1
Let brotherly love continue.