1 John 4:20-21
If a man say, I love God, and hates his brother, he is a liar: for he that loves not his brother whom he has seen, how can he love God whom he has not seen?
Topicalbible.org—AKJV

1 John 3:14
We know that we have passed from death to life, because we love the brothers. He that loves not his brother stays in death.
Topicalbible.org—AKJV