NET
15 Everyone who hates his fellow Christian is a murderer, and you know that no murderer has eternal life residing in him.
Darby
15 Every one that hates his brother is a murderer, and ye know that no murderer has eternal life abiding in him.
KJV
15 Whosoever hateth his brother is a murderer: and ye know that no murderer hath eternal life abiding in him.