1 John 3:17

Whoever, therefore, has the goods of this world, and sees his brother in need, and yet shuts up his compassion from him, how abides the love of God in him?

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 5:1

Every one who believes that Jesus is the Christ, has been begotten by God; and every one who loves the begetter, loves also the begotten by him.

Treasury of Scripture Knowledge

Summary

But whoso hath this world's good, and seeth his brother have need, and shutteth up his bowels of compassion from him, how dwelleth the love of God in him?

General references

Bible References

How

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 5:1
Every one who believes that Jesus is the Christ, has been begotten by God; and every one who loves the begetter, loves also the begotten by him.

General references

1 John 4:11
Beloved, if God so loved us, we, also, ought to love one another.