This is a great chapter of encouragement, warnings and directions.
9 If anyone claims, “I am living in the light,” but hates a Christian brother or sister, that person is still living in darkness. 10 Anyone who loves another brother or sister is living in the light and does not cause others to stumble.
Walk the talk!
28 And now, dear children, remain in fellowship with Christ so that when he returns, you will be full of courage and not shrink back from him in shame.29 Since we know that Christ is righteous, we also know that all who do what is right are God’s children.
Remain in fellowship with Christ!