1 John 2:9

He who says that he is in the light, and hates his brother, is in the darkness even until now.

1 John 2:11

But he that hates his brother is in the darkness, and walks in the darkness, and knows not where he is going, because the darkness blinded his eyes.

1 John 4:20

If anyone says, "I love God," and hates his brother, he is a liar; for he that loves not his brother whom he has seen, cannot love God Whom he has not seen.

John 9:41

Jesus said to them, "If ye were blind, ye would have no sin; but now ye say, 'We see,' your sin abides."

Romans 2:18-21

and understand His will, and approve the things that are excellent, being instructed out of the law,

1 Corinthians 13:1-3

If I speak with tongues of men and of angels, but have not love, I have become sounding brass, or a clanging cymbal.

2 Peter 1:9

for he to whom these things are lacking is blind, seeing dimly, having forgotten the cleansing from his old sins.

1 John 1:6

If we say that we have fellowship with Him, and are walking in the darkness, we lie, and do not the truth;

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 him;

1 John 3:13-17

Marvel not, brethren, if the world hates 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 who says, "I have known Him," and does not keep His commandments, is a liar, and the truth is not in him;

He is

1 John 1:6
If we say that we have fellowship with Him, and are walking in the darkness, we lie, and do not the truth;
John 9:41
Jesus said to them, "If ye were blind, ye would have no sin; but now ye say, 'We see,' your sin abides."
Romans 2:18
and understand His will, and approve the things that are excellent, being instructed out of the law,

And hateth

1 John 3:13
Marvel not, brethren, if the world hates you.

Is in

1 John 2:11
But he that hates his brother is in the darkness, and walks in the darkness, and knows not where he is going, because the darkness blinded his eyes.
1 Corinthians 13:1
If I speak with tongues of men and of angels, but have not love, I have become sounding brass, or a clanging cymbal.
2 Peter 1:9
for he to whom these things are lacking is blind, seeing dimly, having forgotten the cleansing from his old sins.

General references

John 15:12
This is My commandment, that ye love one another, even as I loved you.
Hebrews 13:1
Let brotherly love continue.