1 John 4:20-21

Young's Literal Translation

²⁰ if any one may say -- `I love God,' and his brother he may hate, a liar he is; for he who is not loving his brother whom he hath seen, God -- whom he hath not seen -- how is he able to love?

²¹ and this [is] the command we have from Him, that he who is loving God, may also love his brother.