This is how we know who the children of God are and who the children of the devil are: Anyone who does not do what is right is not God’s child, nor is anyone who does not love their brother and sister. 1 John 3:10 (NIV)
If someone claims, “I know God,” but doesn’t obey God’s commandments, that person is a liar and is not living in the truth. 1 John 2:4 (NLT)
Whoever claims to love God yet hates a brother or sister is a liar. For whoever does not love their brother and sister, whom they have seen, cannot love God, whom they have not seen. 1 John 4:20 (NIV)