1 John 4:21 in the King James Version
And this commandment have we from him, That he who loveth God love his brother also.
Context
20 If a man says, “I love God,” and hates his brother, he is a liar; for he who doesn’t love his brother whom he has seen, how can he love God whom he has not seen?
21 This commandment we have from him, that he who loves God should also love his brother.