The Bible gives one continuous message. Genesis 1&2 gives us the true beginning of heaven and earth. Everything was very good in God’s creation. Genesis 3 shows us the massive and disastrous change that took place due to Adam’s sin. From that point on, God showed us the importance of humbling ourselves and turning to Him in repentance and being saved.
In verse 11 of our text, we are reminded of the message that was from the beginning. The key to success is to love one another. God took us back to the of time Cain and Abel in verse 12. Cain did not love his brother, Abel. Cain is identified with “that wicked one”. Jesus tells us the nature of the devil:

John 8:44 Ye are of your father the devil, and the lusts of your father ye will do. He was a murderer from the beginning, and abode not in the truth, because there is no truth in him. When he speaketh a lie, he speaketh of his own: for he is a liar, and the father of it.

Cain is known as the first human murderer. God tells us that Cain lacked love for his brother, Abel. Why did he hate his brother? “His own works were evil and his brother’s righteous.” It is “strange” to realize that people are so evil that they refuse to change even when they know what they have done is wrong. Cain shows us that this is not “strange” at all for the lost person. They are so stubborn and blinded by sin that they refuse to acknowledge and deal with their sin.
In verse 13 we are reminded that the saved should not be surprised if the world hates us. Those who are saved would think that others should be thankful if someone can show them the way of blessing and true joy. However, that is not the case. The sad reality is that even saved people can get upset with another saved person that seeks to help them acknowledge and overcome some sin. The saved person cannot remain in that state because the love of God dwells in them. God will chasten His own to bring about the peaceable fruit of righteousness. If the saved person refuses to repent and do right, God can remove them from this earth.
In verse 14 we are reminded of things that we know, if we are saved. This is again why faithful and careful teaching is so important. The saved need to be taught the truth. We need to be reminded that the saved person is passed from death unto life.

John 5:24 Verily, verily, I say unto you, He that heareth my word, and believeth on him that sent me, hath everlasting life, and shall not come into condemnation; but is passed from death unto life.

That is a fact. As God has shown us throughout the Bible, the saved person is uniquely different because God has changed him. He now has life, eternal life. He can see things differently and he has been given a different motivation.
The reason the saved person can love his brother, is because he has passed from death unto life. There is so much hatred in our world. We have heard so much about the sodomite agenda of late. Our P.M. was in a town hall just recently, condemning those who would protest against the “drag queen” story hours that are being protected and promoted in too many places. That man again proved his hatred for all people, including his own children, whom he claims to love. If he gets his way, anyone who speaks out against this wicked agenda will be silenced. It seems that Calgary, Alberta has the strongest laws against protests of this wicked agenda. I used to think that Alberta was one of the freer places to live in Canada. They have proven me wrong many times.
John further tells us that the person that does not love his brother “abideth in death”. That person has not passed from death unto life.

Ephesians 2:1 And you hath he quickened, who were dead in trespasses and sins;