Colossians 2:5

So in my short (since Katie is not going to sleep and Owen will eat soon. ) quiet time I am pondering...

is Paul rejoicing in their stability of faith because of their good discipline (Col 2:5)?
Their discipline of knowing (Col 2:2-4) that they have attained all the wealth that comes from the full assurance of understanding, resulting in a true knowledge of God's mystery, that is, Christ Himself, in whom are hidden all the treasures of wisdom and knowledge.
If so I NEED to preach the gospel to myself all the more...I need a steadfast faith in Christ alone.