This is the message you have heard from the beginning:
we should love one another,
unlike Cain who belonged to the Evil One
and slaughtered his brother.
Why did he slaughter him?
Because his own works were evil,
and those of his brother righteous.
Do not be amazed, then, brothers and sisters, if the world hates you.
We know that we have passed from death to life
because we love our brothers.
Whoever does not love remains in death.
Everyone who hates his brother is a murderer,
and you know that no murderer has eternal life remaining in him.
The way we came to know love
was that he laid down his life for us;
so we ought to lay down our lives for our brothers.
If someone who has worldly means
sees a brother in need and refuses him compassion,
how can the love of God remain in him?
Children, let us love not in word or speech
but in deed and truth.
Now this is how we shall know that we belong to the truth
and reassure our hearts before him
in whatever our hearts condemn,
for God is greater than our hearts and knows everything.
Beloved, if our hearts do not condemn us,
we have confidence in God.