1 John 4:20

If a man says 'I love God,' and yet hates his Brother, he is a liar; for the man who does not love his Brother, whom he has seen, cannot love God, whom he has not seen.

1 John 2:4

The man who says 'I know Jesus,' but does not lay his commands to heart, is a liar, and the Truth has no place in him;

1 John 2:9

He who says that he is in the Light, and yet hates his Brother, is in the Darkness even now.

1 John 3:17

But, if any one has worldly possessions, and yet looks on while his Brother is in want, and steels his heart against him, how can it be said that the love of God is within him?

1 John 4:12

No human eyes have ever seen God, yet, if we love one another, God remains in union with us, and his love attains its perfection in us.

1 John 2:11

while he who hates his Brother is in the Darkness, and is living in the Darkness, and does not know where he is going, because the Darkness prevents his seeing.

1 Peter 1:8

Though you have never seen him, yet you love him; though you do not even now see him, yet you believe in him, and exalt with a triumphant happiness too great for words,

1 John 1:6

If we say that we have communion with him, and yet continue to live in the Darkness, we lie, and are not living the Truth.

Treasury of Scripture Knowledge

Summary

1 John 4:20

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?

A man

1 John 2:4

1 John 3:17

Not

1 John 4:12

General references

Hebrews 13:1

Bible References

A man

The man who says 'I know Jesus,' but does not lay his commands to heart, is a liar, and the Truth has no place in him;

But, if any one has worldly possessions, and yet looks on while his Brother is in want, and steels his heart against him, how can it be said that the love of God is within him?

Not

No human eyes have ever seen God, yet, if we love one another, God remains in union with us, and his love attains its perfection in us.

General references

On these two commandments hang all the Law and the Prophets."

For, when I was hungry, you gave me no food; when I was thirsty, you gave me no drink;

It is by this that every one will recognize you as my disciples--by your loving one another."

If you love me, you will lay my commands to heart,

Let your love for the Brethren continue. :24 Give our greeting to all your Leaders, and to all Christ's People. Our friends from Italy send their greetings to you.