1 John 3:4-9 - 5 Reasons Why A Believer Cannot Continually Practice Sin.

There was a major problem in the early church during the Apostle John's lifetime. People who were professing Christians were practicing immorality. The Gnostics, who were false teachers taught that this was okay. This is why John at this point digresses from the wonderful plan of God, which is that He loves you with a depth of love that is beyond your imagination - He wants to make you like Himself - and if you have this hope and expectation, then you will purify yourself as He is pure - and John turns now to warn the church..