We know that we have passed from death unto life, because we love the brethren. He that loves not his brother abides in death.
All Commentaries on 1 John 3:14 Go To 1 John 3
George Leo Haydock
AD 1849
We know that we have passed from death to life; i.e. from the death of sin to the life of grace: we know it by a moral certainty, when we experience in our heart a love of our neighbour.
He that loves not God and his neighbour, abides in death. He that hates his brother with a mortal hatred, or to a considerable degree, is a murderer.