1 John 1:6-7

Four times in his letter John bluntly accuses the false teachers of being liars; and the first of these occasions is in this present passage.

(i) Those who claim to have fellowship with the God who is altogether light and who yet walk in the dark are lying ( 1 John 1:6 ). A little later he repeats this charge in a slightly different way. The man who says that he knows God and yet does not keep God's commandments is a liar ( 1 John 2:4 ). John is laying down the blunt truth that the man who says one thing with his lips and another thing with his life is a liar. He is not thinking of the man who tries his hardest and yet often fails. "A man," said H. G. Wells, "may be a very bad musician, and may yet be passionately in love with music"; and a man may be very conscious of his failures and yet be passionately in love with Christ and the way of Christ. John is thinking of the man who makes the highest possible claims to knowledge, to intellectual eminence and to spirituality, and who yet allows himself things which he well knows are forbidden. The man who professes to love Christ and deliberately disobeys him, is guilty of a lie.

(ii) The man who denies that Jesus is the Christ is a liar ( 1 John 2:22 ). Here is something which runs through the whole New Testament. The ultimate test of any man is his reaction to Jesus. The ultimate question which Jesus asks every man is: "Who do you say that I am?" ( Matthew 16:13 ). A man confronted with Christ cannot but see the greatness that is there; and, if he denies it, he is a liar.

(iii) The man who says that he loves God and at the same time hates his brother is a liar ( 1 John 4:20 ). Love of God and hatred of man cannot exist in the same person. If there is bitterness in a man's heart towards any other, that is proof that he does not really love God. All our protestations of love to God are useless if there is hatred in our hearts towards any man.