As a Believer, you are a child of God…adopted by Him and bearing the family likeness, with access to Truth & life that remains hidden to those who are in the world. John uses the word “lavish” to show the extravagant love God bestows on His children. This sonship is the purpose of His given love, which our heart then recognizes with unspeakable joy. For this mind-bending idea that God would love us enough to make us His children is just one of the amazing aspects of the Gospel Message. That’s why unbelievers don’t “know” Believers, because unbelievers don’t “know” Christ Jesus. The word “know” here being far reaching from just information…referring rather to a sense of intimacy, fellowship, and connection. So, the bottom-line is this, the world has no relationship either with God or Believers.