My little children, I write these things to you so that you may not sin. If anyone sins, we have a Counselor{Greek Parakleton: Counselor, Helper, Intercessor, Advocate, and Comfortor.} with the Father, Jesus Christ, the righteous.
The second word, paidia, is found in verses 13 and 18, where John addresses "the youngest believers in the family of God" (Vine 188). Teknia is used by John to address all of his children in the gospel, regardless of their spiritual age. It is a fitting term, indeed, in this instance because he is about to give some fatherly advice, yea, apostolic commands to these beloved disciples of the Lord.