I'm going through at present the book of Colossians on my youtube (1horsesrcool)
Chapter two is a very important chapter, as it is the chapter that has been twisted and NOT understood correctly by the many theology guys/gals - even those with PhD after their name.
The Christian theology of the world is mostly very bad on the basics of law and grace and salvation. They are as Paul wrote, "Ever learning (Paul had tongue in cheek) but never able to come to the knowledge of the truth."
Christian Theology today is a miss-noma for most will not read the Gospels and simply follow Christ....they follow man-made traditions that have come through the Roman Catholic church.
If you want the truth of the matter, on Bible topics, you need to go to my website - keithhunt.com and find the answers in your Bible.
Paul also said once "the simplicity that is in Christ" - and it is indeed so - read the Gospels, see what Jesus taught, and how He lived and the customs He observed, and he never did one animal sacrifice.
Peter was also inspired to say Jesus set us an example who did no sin. Yes look that up in the epistles of Peter.
The Bible defines sin - 1 John 3:4 and Romans chapter 7. The Bible defines itself, one of the most important keys to Bible understanding.