20 If anyone says, "I love God," and yet habitually hates his brother, he is a liar; for whoever does not love his brother whom he has seen cannot love God whom he has not seen.
1 John 4:20 Cross References - Williams
1 Peter 1:8
8 You must continue to love Him, although you have never seen Him, but because you do believe in Him, although you do not now see Him, you must continue to rejoice with an unutterable and triumphant joy,
1 John 1:6
6 If we say "We have fellowship with Him," and yet live in darkness, we are lying and not practicing the truth.
1 John 2:4
4 Whoever says, "I know Him," but does not practice obedience to His commands is a liar, and there is no truth in his heart;
1 John 2:9
9 Whoever claims to be in the light, and yet continues to hate his brother is still in darkness.
1 John 2:11
11 But whoever continues to hate his brother is in darkness and is living in darkness, and he does not know where he is going, because the darkness has blinded his eyes.
1 John 3:17
17 But if anyone has the world's means of supporting life and sees his brother in need and closes his heart against him, how can love to God remain in him?
1 John 4:12
12 No one has ever seen God; yet if we practice loving one another, God remains in union with us, and our love for Him attains perfection in our hearts,