20 If a man say, "I love God," and yet hate his brother, he is a liar. For how can he that loveth not his brother whom he hath seen, love God whom he hath not seen?
1 John 4:20 Cross References - MSTC
1 Peter 1:8
8 whom ye have not seen and yet love him, in whom even now, though ye see him not, yet ye believe, and rejoice with joy unspeakable and glorious:
1 John 1:6
6 If we say that we have fellowship with him, and yet walk in darkness, we lie, and do not the truth:
1 John 2:4
4 He that saith, "I know him," and yet keepeth not his commandments, is a liar, and the verity is not in him.
1 John 2:9
9 He that saith how that he is in the light, and yet hateth his brother, is in darkness even until this time.
1 John 2:11
11 And he that hateth his brother is in darkness, and walketh in darkness; and knoweth not whither he goeth, for darkness hath blinded his eyes.
1 John 3:17
17 He, then, that hath the substance of the world, and seeth his brother have need, and shutteth up his compassion from him: how dwelleth the love of God in him?
1 John 4:12
12 No man hath seen God at any time. If we love one another, God dwelleth in us, and his love is perfect in us.