Read Part 1, Part 2, Part 3.

The Principal Offerings with regard to the first chapter of 1 John
The Burnt Offering aspect - 1 John 1:1-2 "Life was manifested"
The Peace Offering aspect - 1 John 1:3-4 "fellowship with the Father and with His Son" 
The Meal Offering aspect - 1 John 1: 5-6 "God is light...no darkness...truth"
The Sin Offering aspect - 1 John 1:7 "cleanseth us from all sin"
The Trespass Offering aspect - 1 John 1:8-9 "confess our sins"