1 John 2:3-6 NLT

3 And how can we be sure that we belong to him? By obeying his commandments.
4 If someone says, "I belong to God," but doesn't obey God's commandments, that person is a liar and does not live in the truth.
5 But those who obey God's word really do love him. That is the way to know whether or not we live in him.
6 Those who say they live in God should live their lives as Christ did.