“We know that we have passed from death unto life, because we love the brethren. He that loveth not his brother abideth in death.”
1 John 3:14

He had said earlier that we shouldn’t marvel if the world hates us (1 John 3:13), and this is something Jesus made clear to us many times, he said:
“Blessed are ye, when men shall revile you, and persecute you, and shall say all manner of evil against you falsely, for my sake.” Matthew 5:11, see also Matthew 10:24-25
Because the word separates us and we are offsprings of the word that do the word, the world would detest us:
“They are not of the world, even as I am not of the world. Sanctify them through thy truth: thy word is truth.” John 17:16-17
At times without a natural cause, just like they did to Jesus (John 15:25), but fret not and don’t fear them, listen to Jesus:
“And I say unto you my friends, Be not afraid of them that kill the body, and after that have no more that they can do.” Luke 12:4
So if people separate you from their company, it doesn’t mean you are in the wrong or you’ve done anything wrong, he says be aware that you abide in life!

Bible Reading Plan: Isahiah 38, Leviticus 3