1 John 4:20

If anyone says "I love God" and yet hates his fellow Christian, he is a liar, because the one who does not love his fellow Christian whom he has seen cannot love God whom he has not seen.

1 John 2:4

The one who says "I have come to know God" and yet does not keep his commandments is a liar, and the truth is not in such a person.

1 John 2:9

The one who says he is in the light but still hates his fellow Christian is still in the darkness.

1 John 3:17

But whoever has the world's possessions and sees his fellow Christian in need and shuts off his compassion against him, how can the love of God reside in such a person?

1 John 4:12

No one has seen God at any time. If we love one another, God resides in us, and his love is perfected in us.

1 John 2:11

But the one who hates his fellow Christian is in the darkness, walks in the darkness, and does not know where he is going, because the darkness has blinded his eyes.

1 Peter 1:8

You have not seen him, but you love him. You do not see him now but you believe in him, and so you rejoice with an indescribable and glorious joy,

1 John 1:6

If we say we have fellowship with him and yet keep on walking in the darkness, we are lying and not practicing the truth.

Treasury of Scripture Knowledge

Summary

If a man say, 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?

Bible References

A man

1 John 2:4
The one who says "I have come to know God" and yet does not keep his commandments is a liar, and the truth is not in such a person.
1 John 3:17
But whoever has the world's possessions and sees his fellow Christian in need and shuts off his compassion against him, how can the love of God reside in such a person?

Not

1 John 4:12
No one has seen God at any time. If we love one another, God resides in us, and his love is perfected in us.

General references

Matthew 22:40
All the law and the prophets depend on these two commandments."
Matthew 25:42
For I was hungry and you gave me nothing to eat, I was thirsty and you gave me nothing to drink.
John 13:35
Everyone will know by this that you are my disciples -- if you have love for one another."
John 14:15
"If you love me, you will obey my commandments.
Hebrews 13:1
Brotherly love must continue.

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