‘If a man say, I love God, and hates his brother, he is a liar, for he who loves not his brother whom he has seen, cannot love God whom he has not seen.'
The result is that we will love all who are true brothers in Christ, those who are of and speak forth the truth. For they share the love that we enjoy, and they too are in His love. And they minister to us of Christ, as we should minister to them. Must they not then be within our love, which He has produced within us? It would be an impossible contradiction to be filled with God's love and not to love those whom God loves. Thus if a man says, ‘I love God', but hates his brother he is a liar. That is, he does not love God. This is the test of antichrist and of false teaching. They do not love the brethren because the brethren expose their false teaching for what it is, and refuse to countenance their fantasies.
Those who are our brothers in Christ are in fact what we actually see of God. His work is at work within them as it is in us. His work is being accomplished through them. Each member has his part to play, and without each member we are not whole. If we then do not love them, (purpose well towards them and seek their good and rejoice in the truth we share with them), then we do not love the unseen God Who dwells within them, nor are we aware of the purpose to which He has called us.