Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew him not.
Did you ever woner why so many people take offense to believers when they talk about things of Christ or the Bible??? This verse demonstrates why that is.. Many people will say they are religious, or they are a Christian all the while finding faultwith something you said or wrote..
What does the Apostle John say here? The world does not KNOW or UNDERSTAND us because they do not know or have a relationship with the Lord Jesus Christ!