The Theme of First John

I recently concluded a series preaching through the whole book of 1 John. I was overwhelmed by the boldness and bluntness of the Apostle John in his preaching to his congregation back in Ephesus.

After thinking back on the theme of the book of 1 John, this is what I came up with:

The theme of 1 John: One who is really born of God will inevitably evidence it by the way he lives in holiness, the way he loves as Christ unconditionally loves, and by what he believes regarding the Son of God.

Any feedback?