1 John 2:4

4 If we say that we know him, but do not obey his commands, we are liars and there is no truth in us.

1 John 2:4 Meaning and Commentary

1 John 2:4

He that saith I know him
God or Christ, as the Gnostics did, who pretended to great, even perfect, knowledge of divine things:

and keepeth not his commandments;
which the above persons had no regard to, and as many who profess great light and knowledge in our days show no concern for:

is a liar;
he contradicts what he says, and gives the lie to it; for though in words he professes to know God, in works he denies him, and which betrays his ignorance of him:

and the truth is not in him;
there is no true knowledge of God and Christ in him; nor is the truth of the Gospel in his heart, however it may be in his head; nor is the truth of grace in him, for each of these lead persons to obedience. The Ethiopic version renders it, "the truth of God is not with him"; (See Gill on 1 John 1:8).

1 John 2:4 In-Context

2 And Christ himself is the means by which our sins are forgiven, and not our sins only, but also the sins of everyone.
3 If we obey God's commands, then we are sure that we know him.
4 If we say that we know him, but do not obey his commands, we are liars and there is no truth in us.
5 But if we obey his word, we are the ones whose love for God has really been made perfect. This is how we can be sure that we are in union with God:
6 if we say that we remain in union with God, we should live just as Jesus Christ did.
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.