"For this is the declaration which you have heard from the beginning, that you should love one another.
Not as Cain, who was of the wicked one and killed his brother. And wherefore did he kill him? Because his own works were wicked: and his brother's just.
Wonder not, brethren, if the world hate you.
We know that we have passed from death to life, because we love the brethren. He that loveth not abideth in death.
Whosoever hateth his brother is a murderer. And you know that no murderer hath eternal life abiding in himself. “
1 John 3.11-15
Love is a must
There is one main “thing”, that can distinguish us from the World – Love. If we love one another, we go in a completely opposite direction, than the World goes. Cain is a representative of the World and Abel is a representative of a Christian (believer in Christ). As we read in that scripture, we have no choice, but to love our brothers and sisters. Otherwise we abide in death.
There is also a price tag attached to it. When we love other people, a lot of them will hate us. They hate us, just because we do good, and we do not follow their path. Because we are different, and we do not belong to their company.
And lastly, there is a warning. If you hate other people, you are a murderer. A sin starts from a thought. You do not have to do anything actually. It is enough that you will think about it! Do not hate people, love them. Love is a must!