Charles Spurgeon Commentary 1 John 2:4

"He that saith, I know him, and keepeth not his commandments, is a liar, and the truth is not in him;" — 1 John 2:4 (ASV)

He that saith, I know him, and keepeth not his commandments, is a liar and the truth is not in him. (1 John 2:4)

This is a terrible condition for anyone to be in, to say that he knows Christ, and yet to have the Holy Spirit calling him a liar because he is not keeping Christ's commandments. Again I remind you that obedience is essential to Christian discipleship. If we refuse to obey Christ's commandments it is clear that we do not really know the Saviour at all, we are not even beginners in the school of Christ.