1 John 4:19-21

New Catholic Bible

¹⁹ Therefore, we love because he first loved us.
²⁰ If someone says, “I love God,”
but at the same time hates his brother,
he is a liar.
For whoever does not love the brother
whom he has seen
cannot love God whom he has not seen.
²¹ This is the commandment
we have received from him:
whoever loves God
must also love his brother.